Determinants of mental health and abuse of psychoactive substances associated with tobacco use. A case-control study

Thiago Aquino de Amorim Roselma Lucchese Ernestina Maria da Silva Neta Jaqueline Soares dos Santos Ivânia Vera Núbia Inocêncio de Paula Naiane Dias Simões Luiz Henrique Batista Monteiro About the authors

Abstract

This study aimed to estimate the strength of association among smokers with variables regarding mental health, family functionality, and use of other psychoactive substances. This is a case-control observational study developed from March to November 2016. The study was conducted in a Brazilian Midwest municipality with 646 subjects, of which 323 were cases. In the model, the case group comprised subjects with a certain degree of tobacco dependence. The control group included subjects that were not exposed to tobacco. Concerning tobacco use time, the mean exposure of the case group was 25.65 years. In the multiple logistic regression analysis model the following were positively associated: non-white skin color (p = 0.002); years of study ≤ 8 (p < 0.001); having children (p < 0.001); informal work (p = 0.024); not having a health plan (p < 0.001); high family dysfunction (p = 0.007); AUDIT ≥ 8 (p < 0.001); depression (p < 0.001); having illicit drug in lifetime (p < 0.001); living with other people (p = 0.003) and no religion (p = 0.001). This study reinforces the vulnerability of smokers, associating variables correlated to the field of mental health, and innovates by discussing the influence of family relationships on nicotinic dependence.

Key words
Tobacco; Family relationships; Mental disorders; Ethnic groups; Illicit drugs

Introduction

There is a worldwide consensus that nicotine dependence is a serious public health problem, with an annual mortality of approximately 5.4 million people, higher when compared to lethality from infectious diseases such as AIDS, tuberculosis and malaria11 Sociedade Brasileira de Pneumologia e Tisiologia (SBPT). Diretrizes em foco: Tabagismo. Rev. Assoc. Med. Bras. 2010; 56(2):127-143. [acessado 2018 Jan 10]. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-42302010000200005
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. Tobacco is the leading cause of preventable death in the world, with an increased estimate of approximately 8 million deaths per year by 203022 World Health Organization (WHO). Who Report on the Tobacco Epidemic, 2011 Warning about the dangers of tobacco. Suíça, 2011 [acessado 2017 Set 13]. Disponível em: http://www.who.int/tobacco/global_report/2011/exec_summary/en/
http://www.who.int/tobacco/global_report...
. In Brazil, the number of smokers has decreased since the 1990s, but it is estimated that the population of smokers is 27.9 million and that smoking causes 200 thousand deaths annually11 Sociedade Brasileira de Pneumologia e Tisiologia (SBPT). Diretrizes em foco: Tabagismo. Rev. Assoc. Med. Bras. 2010; 56(2):127-143. [acessado 2018 Jan 10]. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-42302010000200005
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.

According to the tenth revision of the International Code of Diseases (ICD 10 F-17.2)33 Organização Mundial da Saúde (OMS). Classificação Estatística Internacional de Doenças e Problemas Relacionados à Saúde - CID-10. 2008. [acessado 2017 Set 13]. Disponível em: http://www.cid10.com.br
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, tobacco use has the potential to induce nicotine dependence and trigger mental and behavioral disorders, including depressive symptoms, bipolar disorder, anxiety, personality disorder and attention deficit disorder. Smokers with nicotine dependence are 2.7 to 8.1 times more likely to develop these disorders, respectively when compared to sporadic smokers, former smokers, and individuals who have never smoked44 American Psychiatric Association (APA). Diagnostic and statistical manual of mental disorders: DSM-5. 5th ed. Washington: Artmed; 2014.. Thus, tobacco use is classified as a chronic disease33 Organização Mundial da Saúde (OMS). Classificação Estatística Internacional de Doenças e Problemas Relacionados à Saúde - CID-10. 2008. [acessado 2017 Set 13]. Disponível em: http://www.cid10.com.br
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, associated with several symptoms that can substantially compromise health conditions44 American Psychiatric Association (APA). Diagnostic and statistical manual of mental disorders: DSM-5. 5th ed. Washington: Artmed; 2014..

Tobacco use is an avoidable cause of several chronic health problems, associated with neoplasms, cardiovascular diseases, pulmonary diseases, ophthalmological alterations, among others55 Brasil. Ministério da Saúde (MS). Pesquisa Nacional de Saúde - PNS 2013: percepção do estado de saúde, estilos de vida e doenças crônicas. Brasília: MS; 2014. [acessado 2017 Set 13]. Disponível em: http://portalarquivos.saude.gov.br/images/pdf/2015/agosto/24/PNS-Volume-1-completo.pdf
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. Among these comorbidities, the association with other variables is pointed out by researchers, such as males66 Ng M, Freeman KM, Fleming DT, Robinson M, Dwyer-Lindgren L, Thomson B, Wollum A, Sanman E, Wulf S, Lopez AD, Murray CJ, Gakidou E. Smoking Prevalence and Cigarette Consumption in 187 Countries, 1980-2012. JAMA 2014; 311(2):183-192., adulthood77 Kabwama SN, Ndyanabangi S, Mutungi G, Wesonga R, Bahendeka SK, Guwatudde D. Tobacco use and associated factors among Adults in Uganda: Findings from a nationwide survey. Tob Induc Dis 2016; 14:27., unfavorable economic conditions88 Uguru NP, Mbachu C, Ibe OP, Uguru CC, Odukoya O, Okwuosa C, Onwujekwe O. Investigating male tobacco use and expenditure patterns across socio-economic groups in Nigeria. PLoS One 2015; 10(4):e0122021., unemployment, low level of schooling 66 Ng M, Freeman KM, Fleming DT, Robinson M, Dwyer-Lindgren L, Thomson B, Wollum A, Sanman E, Wulf S, Lopez AD, Murray CJ, Gakidou E. Smoking Prevalence and Cigarette Consumption in 187 Countries, 1980-2012. JAMA 2014; 311(2):183-192.,88 Uguru NP, Mbachu C, Ibe OP, Uguru CC, Odukoya O, Okwuosa C, Onwujekwe O. Investigating male tobacco use and expenditure patterns across socio-economic groups in Nigeria. PLoS One 2015; 10(4):e0122021.

9 Cullen J, Mowery P, Delnevo C, Allen JA, Sokol N, Byron MJ, Thornton-Bullock A. Seven-year patterns in US cigar use epidemiology among young adults aged 18-25 years: a focuson race/ethnicity and brand. Am J Public Health 2011; 101(10):1955-1962.
-1010 Richardson A, Xiao H, Vallone DM. Primary and dual users of cigars and cigarettes: profiles, tobacco use patterns and relevance to policy. Nicotine Tob Res 2012; 14(8):927-932., low body mass index (BMI), current consumption of alcoholic beverages1111 Berg CJ, Ajay VS, Ali MK, Kondal D, Khan HM, Shivashankar R, Pradeepa R, Mohan D, Fatmi Z, Kadir MM, Tandon N, Mohan V, Narayan KM, Prabhakaran D. A cross-sectional study of the prevalence and correlates of tobacco Use in Chennai, Delhi, and Karachi: data from the CARRS study. BMC Public Heath 2015; 15(483):1-12. and residing in rural areas88 Uguru NP, Mbachu C, Ibe OP, Uguru CC, Odukoya O, Okwuosa C, Onwujekwe O. Investigating male tobacco use and expenditure patterns across socio-economic groups in Nigeria. PLoS One 2015; 10(4):e0122021.,1212 Singh A, Ladusingh L. Prevalence and determinants of tobacco use in India: evidence from recent Global Adult Tobacco Survey data. PLoS One 2014; 9(12):e114073..

The context of family relationships, in particular, family dysfunction, is an important risk factor for the development of psychoactive substance dependence. Some studies with adolescents have shown that living in a dysfunctional family environment is associated with an increased likelihood of becoming a smoker. Although the consequences of nicotine dependence have significant impacts worldwide, investigations regarding the influence of family relationships on tobacco use are still insufficient1313 Abreu MN, Caiaffa WT. Influência do entorno familiar e do grupo social no tabagismo entre jovens brasileiros de 15 a 24 anos. Rev Panam. Salud Publica 2011; 30(1):22-30..

However, associations with other morbidities in the field of mental health and behaviors that would further aggravate the condition of disorders caused by recurrent tobacco use are considered for this study. Given the above, it is hypothesized that psychiatric comorbidities and the use of other psychoactive substances are associated with tobacco dependence, a condition that potentiates chronic health problems and that affects the relationships of these individuals, especially the family.

This study innovated when testing the variable family functionality amidst the vulnerability condition to which individuals with nicotine dependence levels are exposed. This study aimed to estimate the strength of association between characteristics of the smoking group and variables related to mental health, family functionality and the use of other psychoactive substances.

Methods

This is an observational, case-control study to investigate the frequency of characteristics in the case group when compared to the control group1414 Rodrigues LC, Werneck GL. Estudos de caso controle. In: Medronho RA, Bloch KV, Luiz RR, Werneck GL, organizadores. Epidemiologia. 2ª ed. São Paulo: Atheneu; 2009. p. 221-236.. In the model, the case group comprised individuals with some degree of tobacco dependence, and the control group included individuals not exposed to tobacco. The field of study took place in a municipality of significant economic and social role in the Midwest of the country.

The case group population consisted of regular smokers (last 30 days1515 Barreto SM, Giatti L, Oliveira-Campos M, Andreazzi MA, Malta DC. Experimentation and use of cigarette and other tobacco products among adolescents in the Brazilian state capitals (PeNSE 2012). Rev Bras Epidemiol 2014; 17(Supl. 1):62-76.), and the control group included non-smokers, both residents in the municipality in question. The sample was calculated in the Stata Software Package (STATA) program, version 14.0, using the sampsi .15. 25, power (.80) a (.05) commands1616 Hamilton LC. Statistics with STATA: Version 12. 8th ed. Boston: Cengage Learning; 2013.. We considered a 15% prevalence of regular smoking in the Brazilian population55 Brasil. Ministério da Saúde (MS). Pesquisa Nacional de Saúde - PNS 2013: percepção do estado de saúde, estilos de vida e doenças crônicas. Brasília: MS; 2014. [acessado 2017 Set 13]. Disponível em: http://portalarquivos.saude.gov.br/images/pdf/2015/agosto/24/PNS-Volume-1-completo.pdf
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, a hypothetical increase of 25% for problems related to tobacco use (applied to the case), test power of 80 % and a significance level of 5%. We added 20% to the result, providing for losses, resulting 322 individuals in n1 (control) and 323 individuals in n2 (case), totaling 645 individuals to be interviewed.

The whole sample was paired by gender and age to control for possible confounding bias1414 Rodrigues LC, Werneck GL. Estudos de caso controle. In: Medronho RA, Bloch KV, Luiz RR, Werneck GL, organizadores. Epidemiologia. 2ª ed. São Paulo: Atheneu; 2009. p. 221-236.. The criteria for eligibility of cases were to be aged ≥17 years, to be resident in the city where the research was conducted and to have been a regular smoker for a duration of ≥12 months and a result less than or equal to the minimum level of tobacco dependence measured by the Fagerström Test for Nicotine Dependence (FTND)1717 Carmo JT, Pueyo AA. A adaptação ao português do Fagerström test for nicotine dependence (FTND) para avaliar a dependência e tolerância à nicotina em fumantes brasileiros. Rev Bras Med 2002; 59(1):73-80.. The non-eligible, both for the case and for the control, were nonsmokers who reported congenital cardiovascular diseases without correction and medical diagnosis of psychotic mental disorder.

The sample for the control group was oriented according to the eligibility criteria: ≥17 years old, living in the same municipality as the research, never smoked in their lives (not being current smokers and former smokers) and not living with smokers in the household. We excluded non-smokers who self-reported having congenital cardiovascular problems without correction and evidenced a psychiatric diagnosis of severe and persistent mental disorder (with psychotic symptoms).

Individuals were recruited to the case group by convenience, according to the eligibility criteria in the settings agreed with the university for teaching, extension and research practice. They were community (domiciles, academic and social spaces), Primary Health Care (Basic Health Care Facilities and Family Health Strategy), urgent and emergency care (Emergency Care Unit) and other specialized and medium complexity care (hospitals and testing and counseling centers) mechanisms. The neighborhood criterion was applied1414 Rodrigues LC, Werneck GL. Estudos de caso controle. In: Medronho RA, Bloch KV, Luiz RR, Werneck GL, organizadores. Epidemiologia. 2ª ed. São Paulo: Atheneu; 2009. p. 221-236. as control. Non-smokers were invited to the locations where a smoker was approached, maintaining a similar proportion between the two groups.

The pilot test was a trial that reproduced all the strategies and methods that would be used in the study and was applied to ten individuals (five smokers and five non-smokers) who were in the municipality where the study was performed but did not reside there. The application of the questionnaire in the pilot version aimed to train the team of field researchers and identify the logistic and operational aspects to adjust the data collection tool. This information did not enter into the final data analysis.

Data were collected from March to November of 2016 by field researchers, who were properly trained undergraduate health students.

Interviews were face-to-face, respecting the availability of each, in a reserved place. At that time, they received guidance about the study and signed the Informed Consent Form for individuals aged ≥18 years or Informed Assent Form for those aged 17 fully completed years.

The tool with sociodemographic and historical data was prepared by researchers guided by mental health benchmarks44 American Psychiatric Association (APA). Diagnostic and statistical manual of mental disorders: DSM-5. 5th ed. Washington: Artmed; 2014.. FTND1717 Carmo JT, Pueyo AA. A adaptação ao português do Fagerström test for nicotine dependence (FTND) para avaliar a dependência e tolerância à nicotina em fumantes brasileiros. Rev Bras Med 2002; 59(1):73-80.,1818 Reichert J, Araújo AJ, Gonçalves CM, Godoy I, Chatkin JM, Sales MP, Oliveira MVC, Castillo PL, Meirelles RHS. Diretrizes para cessação do tabagismo. J Bras Pneumol 2004 [acessado 2017 Set 13]; 30:1-75. Disponível em: http://www.scielo.br/pdf/jbpneu/v30s2/a02v30s2.pdf
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was applied for the selection of the case group and description of the nicotinic dependence pattern, with six questions that tracked nicotinic dependence. Scores from zero to 2 points were related to very low dependence; from 3 to 4, to low dependence; 5, average dependence; from 6 to 7, high dependence; and from 8 to 10 points, very high dependence.

The family APGAR tool was used to measure family functionality, which, from the index person, allows to evaluate five aspects: adaptation, partnership, growth, affection and resolve. Each initial letter receives a score of zero to 2 points.

High family dysfunction (HFD) is characterized by the 0-4 points score; 5-6 points would indicate moderate family dysfunction (MFD); and 7-10 points, good family functionality (GFF). The Family APGAR tool was developed by Smilkstein in 19781919 Smilkstein G. The family APGAR: a proposal for a family function test and its use by physicians. J Fam Pract 1978; 6(6):1231-1239.. Its validation in Brazil was carried out through translation and cross-cultural adaptation, with the participation of eight judges in 2001, in addition to a psychometric analysis, through a descriptive, cross-sectional field study with a population of elderly2020 Duarte Y. Família: rede de suporte ou fator estressor: a ótica de idosos e cuidadores familiares [tese]. São Paulo: Universidade de São Paulo; 2001.. The Alcohol Use Disorder Identification Test (AUDIT) validated in Brazil in 19992121 Méndez EB. Uma Versão Brasileira do AUDIT (Alcohol Use Disorders Identification Test) [dissertação]. Pelotas: Universidade Federal de Pelotas; 1999. was used to determine the pattern of risky alcohol use as a screening method for the early detection of alcohol use, consisting of ten questions, in which the maximum score is 40 points. We adopted ≥8 points as cutoff points2222 Lima CT, Freire AC, Silva AP, Teixeira RM, Farrell M, Prince M. Concurrent and construct validity of the AUDIT in an urban Brazilian sample. Alcohol Alcohol 2005; 40(6):584-589.. Regarding APGAR tools FTND and AUDIT, Cronbach’s alpha reliability test was performed.

The variables were of two levels: I (individual) and II (context). At level I, sample pairing was by gender (female vs. male) and age category ( < 30 vs. 30-39 vs. 40-49 vs. 50-59 vs. ≥60). The independent variables were self-reported skin color (white vs. non-white), years of study (≤8 years vs.> 8 years); children (yes vs. no); marital status (living without partner vs. living with partner); formal work (working regime according to national legislation) vs. informal (self-employed or unemployed); religion (self-referred yes vs. no); not having a health plan (yes vs. no); living with relatives, according to the concept of family vs. other people; HFD - score ≤4 through family APGAR (no vs. yes); depression - has or has had a medical diagnosis of depression (no vs. yes); used illicit drugs in lifetime - has already used drugs such as marijuana, cocaine, crack, lysergic acid diethylamide (LSD) or illegally-marketed inhalants (no vs. yes); AUDIT (score < 8 vs. ≥8) and diagnosis of ischemic heart disease - self-reported by medical diagnosis (yes vs. no).

In level-II variables, the contextual ones were inserted in the multilevel analysis model and oriented by importance in the confounding control2323 Porta MA. Dictionary of Epidemiology. 6th ed. Oxford: Oxford University Press; 2014. [acessado 2017 Set 13]. Disponível em: http://irea.ir/files/site1/pages/dictionary.pdf
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, since situations of disease or health are related to contextual factors. The understanding of the health-disease process must be based on the exchange between individuals and context2424 Diez-Roux AV. Multilevel analysis in public health research. Annu Rev Public Health 2000; 21:171-192.. These variables were community vs. PHC services vs. hospitals and specialty services vs. emergency network with effect in the multiple analysis (according to the location of case and control approach). It was a covariate in the analysis of level-II PHC vs. Secondary Care (considering the complexity level of health care corresponding to the four categories of the context variable).

Concerning the statistical analysis of the variables associated to the group, we used software STATA 14.0 and, as a measure of association, the odds ratio (OR), considering 95% confidence interval (CI95%). By obtaining the crude OR, we chose variables with p < 0.10 for the multilevel logistic regression model. At level I, individual variables were inserted following the theoretical model of insertion always adjusted by level II (contextual variable and covariate), as shown in Figure 1.

Figure 1
A conceptual model of multilevel analysis.

The quality of fit between the models was evaluated by the -loglikelihood test, and by level-II variance values of the standard error coefficient (SEC), standard error deviation (SE).

The study was developed respecting the ethical principles that guide Brazilian human research2525 Brasil. Ministério da Saúde (MS). Conselho Nacional de Saúde. Resolução nº 466, de 12 de dezembro de 2012. Diário Oficial da União 2013; 13 dez. and was conducted after authorization from the Research Ethics Committee (CEP).

Results

The study included samples from 322 participants in the control group and 323 participants in the case group. Sample losses were restored by researchers, preserving the sample calculation and pairing by age and gender categories. The control group consisted of individuals with a mean age of 40.22 years (SD of 14.74), while in the case group, the mean age was 40.88 years (SD of 13.21). Regarding the length of tobacco use, the mean exposure of the case group was 25.65 years (SD of 13.87). Information on the sample pairing categories is shown in Table 1.

Table 1
Case and control paired sample data. Midwest, 2016.

Crude and adjusted OR are observed in Tables 2 and 3. It should be noted that the adjusted OR was performed in the model with the contextual factor.

Table 2
Bivariate analysis between control group and case group with independent variables. Midwest, 2016.
Table 3
Models for multiple logistic regression analysis with interview location contextual factor. Midwest. 2016.

In the bivariate analysis, the following variables were positively associated: non-white skin color (p < 0.001, OR 2.65, CI 95% 1.86-3.79); years of study ≤8 (p < 0.001, OR 3.93, 95% CI 2.79-5.52); children (p < 0.001, OR 2.22, 95% CI 1.56-3.16); living with a partner (p = 0.018, OR 1.45, 95% CI 1.06-1.98); informal work (p < 0.001, OR 1.73, 95% CI, 1.11-2.70); no health plan (p < 0.001, OR 3.79, 95% CI 2.63-5.46); HFD (p < 0.001, OR 3.20, 95% CI 1.87-5.47); AUDIT ≥ 8 (p < 0.001, OR 4.94, 95% CI 3.30-7.38); depression (p < 0.001, OR 4.15, 95% CI 2.33-7.40); used illicit drugs in lifetime (p < 0.001, OR 7.37, 95% CI 4.15-13.10); living with other people (p < 0.001, OR 2.39, 95% CI 1.56-3.65); no religion (p < 0.001, OR 2.52, CI 95% 1.61-3.96).

Following multiple analysis of logistic regression with contextual factor of interview site, the following variables were positively associated: non-white skin color (p = 0.002, OR 2.08, 95% CI, 1.31-3.32); years of study ≤8 (p < 0.001, OR 3.41, 95% CI 2.19-5.31); children (p < 0.001, OR 3.31, 95% CI 1.87-5.86); informal work (p = 0.024, OR 1.97, 95% CI 1.09-3.55); no health plan (p < 0.001, OR 2.92, 95% CI 1.82-4.68); HFD (p = 0.007, OR 2.70, IC 95% 1.31-5.55); AUDIT ≥8 (p < 0.001, OR 4.81, 95% CI 2.83-8.18); depression (p < 0.001, OR 3.77, 95% CI 1.88-7.55); used illicit drugs in lifetime (p < 0.001, OR 7.66, 95% CI 3.61-16.25); living with other people (p = 0.003, OR 2.42, 95% CI, 1.36-4.31); and no religion (p < 0.001, OR 2.86, 95% CI 1.54-5.29).

In Table 2, the -2loglikelihood test was reduced as models were inserted, giving the analysis better quality of fit as the groups of individual variables were inserted; the best quality of the variation by the level-II fit is expressed in the value greater than double the standard error coefficient in relation to the standard error deviation in the final model. In the multiple studies, the following remained associated to the case group: non-white skin color, years of study ≤ 8 years, children, informal work, no health plan, HDF, AUDIT ≥ 8, diagnosis of depression, illicit drug use in lifetime and no religion.

Discussion

The main evidence brought about by this study is the association with the smoking group of already known variables (both in the sociodemographic and mental illness realms, as well as those related to the use of other psychoactive and behavioral substances) and another as yet uninvestigated, relative to the family functionality, such as the score of the APGAR evaluation tool for HDF, corroborates mental health implications of the smoking population2626 Vargas LS, Lucchese R, Silva AC, Guimarães RA, Vera I, Castro PA. Determinants of tobacco use by students. Rev Saude Publica 2017; 51(36):1-9.. We also highlight the application of the context variable in the multiple analysis, in search for broader evidence about the studied phenomenon and control of possible bias.

The limits of the investigation are related to the design of the case-control research, especially about memory and selection of the control group. In an attempt to minimize them, the team was trained to approach and obtain the data reported, and the control individual was as representative as possible regarding gender, age, and neighborhood criteria.

As for skin color, the results suggest that individuals who self-declared themselves to be non-white were at risk for some degree of nicotine dependence. This association can be explained by the time the body requires to metabolize nicotine since white individuals have higher metabolism rates than African American individuals. Therefore, they tend to smoke in smaller quantities2727 Rubinstein ML, Shiffman S, Rait MA, Benowitz NL. Race, gender and nicotine metabolism in adolescent smokers. Nicotine Tob Res 2013; 15(7):1311-1315. and take longer to smoke their first cigarette of the day2828 Branstetter SA, Muscat JE. Time to first cigarette and serum cotinine levels in adolescent smokers: National Health and Nutrition Examination Survey, 2007-2010. Nicotine Tob Res 2013; 15(3):701-707.. According to the FTND, both mechanisms affect scores on the evaluation of nicotine dependence, quantity and first cigarette of the day. Another study performed in a multiracial population showed that the plasma level of cotinine (nicotine metabolite) was six times higher in African American participants with a history of exposure to passive smoking compared to other ethnic groups2929 Dempsey DA, Meyers MJ, Oh SS, Nguyen EA, Fuentes-Afflick E, Wu AH, Jacob P, Benowitz NL. Determination of tobacco smoke exposure by plasma cotinine levels in infants and children attending urban public hospital clinics. Arch Pediatr Adolesc Med 2012; 166(9):851-856..

In line with these data from the international literature, recent Brazilian studies show that the prevalence of black self-reported smokers is relatively higher than white self-reported individuals3030 Malta DC, Vieira ML, Szwarcwald L, Caixeta R, Briro SM, Reis AA. Tendências de tabagismo entre a população brasileira - Pesquisa Nacional de Agregados Familiares, 2008 e Pesquisa Nacional de Saúde, 2013. Rev Bras Epidemiol 2015; 18(2):45-56.,3131 Müller EV, Silva MT, Grden CR, Reche PM, Borges PK, Sousa JA. Fatores associados ao tabagismo em usuários da estratégia saúde da família. Cogitare Enferm 2017; 22(4):1-10.. Data from the Brazilian Institute of Geography and Statistics (IBGE) of 2017 corroborate this finding by affirming the existence of social inequality among these racial groups, with the black and brown population having the greatest restriction of access to health, education and social protection3232 Instituto Brasileiro de Geografia e Estatística (IBGE). Pesquisa Nacional por Amostra de Domicílios: Síntese de indicadores sociais: uma análise das condições de vida da população brasileira. Rio de Janeiro: IBGE; 2017..

Regarding the low level of schooling and informal work1010 Richardson A, Xiao H, Vallone DM. Primary and dual users of cigars and cigarettes: profiles, tobacco use patterns and relevance to policy. Nicotine Tob Res 2012; 14(8):927-932.,3333 Panaino EF, Soares CB, Campos CM. Contextos de início do consumo de tabaco em diferentes grupos sociais. Rev Latino-Am Enfermagem 2014; 22(3):379-385., it is suggested that individuals with low educational level and informal workers are susceptible to smoking more and with a greater variety of tobacco-derived products. The use of tobacco associated with low level of schooling indicates that there is insufficient knowledge about the harm that tobacco products cause to smokers77 Kabwama SN, Ndyanabangi S, Mutungi G, Wesonga R, Bahendeka SK, Guwatudde D. Tobacco use and associated factors among Adults in Uganda: Findings from a nationwide survey. Tob Induc Dis 2016; 14:27.,88 Uguru NP, Mbachu C, Ibe OP, Uguru CC, Odukoya O, Okwuosa C, Onwujekwe O. Investigating male tobacco use and expenditure patterns across socio-economic groups in Nigeria. PLoS One 2015; 10(4):e0122021.,3434 Grills NJ, Singh R, Singh R, Martin BC. Tobacco Usage in Uttarakhand: A Dangerous Combination of High Prevalence, Widespread Ignorance, and Resistance to Quitting. Biomed Res Int 2015; 2015:132120., so much so that there is evidence that residing in areas of difficult access to education favors tobacco abuse88 Uguru NP, Mbachu C, Ibe OP, Uguru CC, Odukoya O, Okwuosa C, Onwujekwe O. Investigating male tobacco use and expenditure patterns across socio-economic groups in Nigeria. PLoS One 2015; 10(4):e0122021..

As for the variable having children, this analysis pointed out that individuals who had children tended to smoke more. Conversely, in the literature, another finding is discussed: the fact that children act as a strategy to encourage smoking cessation since parents and children understand that smoking can also affect the health of children in the future3535 Berg CJ, Zheng P, Kegler MC. Family interactions iegarding fathers' smoking and cessation in Shanghai, China. J Smok Cessat, 2014; 11(4)199-202.. Another finding is that a positive association with the use of alcoholic beverages3636 Rathod SD, Nadkarni A, Bhana A, Shidhaye R. Epidemiological features of alcohol use in rural India: a population-based cross-sectional study. BMJ Open 2015; 5(12):e009802. is identified among individuals with at least one child. However, the variable having children requires more studies, since its role in the association with the use of psychoactive substances is not well understood in the literature.

As for work status, unemployed or self-employed individuals are more likely to consume tobacco when compared to individuals with a formal work3737 Kruse GR, Bangsberg DR, Hahn JA, Haberer JE, Hunt PW, Muzoora C, Bennett JP, Martin JN, Rigotti NA. Tobacco use among adults initiating treatment for HIV infection in rural Uganda. AIDS Behav 201; 18(7):1381-1389,3838 Lakew Y, Haile D. Tobacco use and associated factors among adults in Ethiopia: further analysis of the 2011 Ethiopian Demographic and Health Survey. BMC Public Health 2015; 15:487.. Of these, the group of self-employed professionals showed a greater probability of use3939 Kahar P, Misra R, Patel TG. Sociodemographic Correlates of Tobacco Consumption in Rural Gujarat, India. Biomed Res Int 2016; 2016:5856740.. For some working conditions, this relationship can be explained through the control exercised by the employing institution and the imposition of internal anti-smoking rules to workers during the labor process, which substantially limits the time spent in smoking during the period of compliance of working hours3838 Lakew Y, Haile D. Tobacco use and associated factors among adults in Ethiopia: further analysis of the 2011 Ethiopian Demographic and Health Survey. BMC Public Health 2015; 15:487.. Tobacco use control factors in work environments, as well as irregular physical activity and economic conditions should be considered in future studies to increase knowledge about such aspects related to nicotine dependence.

A condition that complements the previous discussion is the variable not having a health plan, which was positively associated with tobacco use. This situation is inherent to the conditions of acquisition of services in the area of supplementary health and can be articulated with the conditions of work with the legalized employment relationship. However, these are still incipient in tobacco use studies. In Brazil, studies show that sociodemographic conditions are directly related to having a health plan; individuals with low economic status, low schooling level, informal profession and self-declared blacks have less access to health services4040 Instituto Brasileiro de Geografia e Estatística (IBGE). Pesquisa Nacional por Amostra de Domicílios: Um panorama da saúde no Brasil. Acesso e utilização dos serviços, condições de saúde e fatores de risco e proteção em saúde 2008. Rio de Janeiro: IBGE; 2010.,4141 Malta DC, Moura EC, Oliveira M, Santos FP. Usuários de planos de saúde: morbidade e uso de exames preventivos, por inquérito telefônico, Brasil, 2008. Cad Saude Publica 2011; 27(1):57-66.. By approaching this discussion, it was found that the people attending the health services to which they are linked can receive advice from professionals about tobacco use-related risks, as well as question their habits and provide advice for cessation3131 Müller EV, Silva MT, Grden CR, Reche PM, Borges PK, Sousa JA. Fatores associados ao tabagismo em usuários da estratégia saúde da família. Cogitare Enferm 2017; 22(4):1-10.. This data implies that individuals who have health plans are better assisted, favoring the adoption of a healthy lifestyle. However, this variable requires better exploration for stronger notes.

Tobacco use compromises the individual’s health and affects family relationships, which can lead to estrangement between family members and compromise good family functioning (GFF). Changes in family relationships occur because passive smokers tend to feel stressed and helpless in the family environment, as well as to adopt negative perceptions regarding the role played by relatives within the family system4242 Woodgate RL, Kreklewetz CM. Youth's narratives about family members smoking: parenting the parent- it's not fair! BMC Public Health 2012; 12:965.. The opposite can also be seen when any dysfunction (mild, moderate or severe) in the family system makes individuals in this group more prone to the use of psychoactive substances, especially tobacco2626 Vargas LS, Lucchese R, Silva AC, Guimarães RA, Vera I, Castro PA. Determinants of tobacco use by students. Rev Saude Publica 2017; 51(36):1-9.,4343 Nogueira AL, Sousa F G, Silva IR, Silva AC Silva DC, Santana E. Funcionalidade de famílias de adolescentes em escolas públicas: uma abordagem descritiva. Cogitare Enfermagem 2012; 17(2):3224-3117.,4444 Soto KE, Carrillo MH, Cassiani CA, Munevar AM, Cardona MC. Factores relacionados con el consumo de sustancias psicoactivas en una institución educativa de Jamundí Valle, Colômbia. Rev Colomb Psiquiat 2016; 45(1):2-7.. Studies with adolescents corroborate this finding by showing that the presence of smokers in the family environment encourages adolescents to use tobacco, either by reproducing tobacco-positive behavior due to exposure to cigarette smoke, resulting in increased sensitivity to nicotine dependence4343 Nogueira AL, Sousa F G, Silva IR, Silva AC Silva DC, Santana E. Funcionalidade de famílias de adolescentes em escolas públicas: uma abordagem descritiva. Cogitare Enfermagem 2012; 17(2):3224-3117.,4545 Selya AS, Dierker LC, Rose JS, Hedeker D, Mermelstein RJ. Risk factors for adolescent smoking: parental smoking and the mediating role of nicotine dependence. Drug Alcohol Depend 2012; 124(3):311-318..

At the same time, living with people other than family members increases the likelihood of individuals consuming tobacco and other drugs. This association can be explained due to the distancing that occurs about relatives, with consequent decrease and cessation of the protective effect, which previously inhibited deviant behavior of the offspring, in particular, the use of psychoactive substances4646 Park S, Kim Y. Prevalence, correlates, and associated psychological problems of substance use in Korean adolescentes. BMC Public Health 2016; 16:79.,4747 Berge J, Sundell K, Öjehagen A, Håkansson A. Role of parenting styles in adolescent substance use: results from a Swedish longitudinal cohort study. BMJ Open 2016; 6(1):1-9.. This finding evidences the importance of good family relationship as a factor preventing the use of illicit substances, but future discussions in this regard are required to clarify this association further.

Tobacco use contributes to various diseases and may also be associated with an increased risk of developing mental disorders, including depression. In the literature, the causality between smoking and depression is attributed to distinct mechanisms, among which the risk would be directly proportional to the use of tobacco, that is, the greater the use of tobacco products, the higher the probability of developing the disease4848 Goodwin RD, Pagura J, Spiwak R, Lemeshow AR, Sareen J. Predictors of persistent nicotine dependence among adults in the United States. Drug Alcohol Depend 2011; 118(2-3):127-133.,4949 Flensborg-Madsen T1, von Scholten MB, Flachs EM, Mortensen EL, Prescott E, Tolstrup JS. Tobacco smoking as a risk factor for depression. A 26-year population-based follow-up study. J Psychiatr Res 2011; 45(2):143-149.. Thus, it is suggested that, due to the action of nicotine in neurochemical systems, as well as neuroendocrine functions, an interference in the trend of the pre-pathological state would occur4949 Flensborg-Madsen T1, von Scholten MB, Flachs EM, Mortensen EL, Prescott E, Tolstrup JS. Tobacco smoking as a risk factor for depression. A 26-year population-based follow-up study. J Psychiatr Res 2011; 45(2):143-149.. There is also a reverse causality: depressive individuals are 1.5 times more likely to initiate and maintain the use of tobacco derivatives5050 Bakar C, Gündogar D, Karaman HI, Maral I. Prevalence and related risk factors of tobacco, alcohol and illicit substance use among university students. Eur J Psychiat 2013; 27(2):97-110., and this can be explained by the lack of health condition self-preserving behaviors5151 Piwonski J, Piwonska A, Sygnowska E. Do depressive symptoms adversely affect the lifestyle? Results of the WOBASZ study. Kardiol Pol 2010; 68(8):912-918. and by increased pleasurable sensations when smoking4949 Flensborg-Madsen T1, von Scholten MB, Flachs EM, Mortensen EL, Prescott E, Tolstrup JS. Tobacco smoking as a risk factor for depression. A 26-year population-based follow-up study. J Psychiatr Res 2011; 45(2):143-149..

This investigation evidenced a negative association in the case group with the status of having religion. There is almost a consensus among studies that practicing a religion is a protective factor in this context. Individuals with a high religious bond tend to be less likely to initiate and maintain tobacco consumption on a daily basis5252 Gomes FC, Andrade AG, Izbicki R, Moreira Almeida A, Oliveira LG. Religion as a protective factor against drug use among Brazilian university students: a national survey. Rev Bras Psiquiatr 2013; 35(1):29-37.

53 Bailey ZD, Slopen N, Albert M, Williams DR. Multidimensional religious involvement and tobacco smoking patterns over 9-10 years: A prospective study of middle-aged adults in the United States. Soc Sci Med 2015; 138:128-135
-5454 Becker J, Schaub MP, Gmel G, Haug S. Cannabis use and other predictors of the onset of daily cigarette use in young men: what mattersmost? Results from a longitudinal study. BMC Public Health 2015; 15:843 since the guidelines of religious precepts positively reinforce the behavior of nonsmokers and encourage individuals who make persistent use of tobacco products to curb and cease this consumption5252 Gomes FC, Andrade AG, Izbicki R, Moreira Almeida A, Oliveira LG. Religion as a protective factor against drug use among Brazilian university students: a national survey. Rev Bras Psiquiatr 2013; 35(1):29-37.,5555 Byron MJ, Cohen JE, Gittelsohn J, Frattaroli S, Nuryunawati R, Jernigan DH. Infhuence of religious organisations' statements on compliance with a smoke-free law in Bogor, Indonesia: a qualitative study. BMJ Open 2015; 5(12):e008111.. Also, it provides individuals with mechanisms of emotional support against stressful factors that have the potential to trigger tobacco use5353 Bailey ZD, Slopen N, Albert M, Williams DR. Multidimensional religious involvement and tobacco smoking patterns over 9-10 years: A prospective study of middle-aged adults in the United States. Soc Sci Med 2015; 138:128-135.

When compared to individuals who are not regular smokers, individuals who smoke cigarettes regularly are more likely to initiate illicit drug use early, especially marijuana, and still report prior consumption opportunities5656 Agrawal A, Madden PA, Martin NG, Lynskey MT. Do early experiences with cannabis vary in cigarette smokers? Drug Alcohol Depend 2013; 128(3):255-259.. This association may be related to genetic and environmental factors5757 Do EK, Prom-Wormley EC, Eaves LJ, Silberg JL, Miles DR, Maes HH. Genetic and Environmental Influences on Smoking Behavior across Adolescence and Young Adulthood in the Virginia Twin Study of Adolescent Behavioral Development and the Transitions to Substance Abuse Follow-Up. Twin Res Hum Genet 2015; 18(1):43-51. and the presence of problematic behaviors, such as hyperactivity, impulsivity and aggressiveness5858 Korhonen T, Levälahti E, Dick DM, Pulkkinen L, Rose RJ, Kaprio J, Huizink AC. Externalizing behaviors and cigarette smoking as predictors for use of illicit drugs: a longitudinal study among Finnish adolescent twins. Twin Res Hum Genet 2010; 13(6):550-558..

As to the relationship between comorbidities of alcohol use and other drugs, this study does not innovate, but the coexistent causal relationship is robust. Tobacco use and daily consumption of alcoholic beverages are integrated. Individuals with tobacco behaviors are more likely to ingest alcohol, just as individuals who ingest alcohol are also likely to use tobacco products; this association occurs regardless of time of exposure5959 Yang JJ, Song M, Yoon HS, Lee HW, Lee Y, Lee SA, Choi JY, Lee JK, Kang D. What Are the Major Determinants in the Success of Smoking Cessation: Results from the Health Examinees Study. PLoS One 2015; 10(12):e0143303.. Among tobacco users, those with a higher daily consumption are associated with higher AUDIT6060 Sanjuan PM, Rice SL, Witkiewitz K, Mandler RN, Crandall C, Bogenschutz MP. Alcohol, tobacco, and drug use among emergency department patients. Drug Alcohol Depend 2014; 138:32-38 scores. Studies suggest that the concomitant use of nicotine with ethanol acts to enhance pleasurable sensations of alcohol and reduce its undesirable effects6161 Benowitz N L. Nicotine addiction. N Engl J Med 2010; 362(24):2295-2303.. Some hypotheses allege that the association between tobacco and alcohol would act by activating the mesolimbic dopaminergic system, which, in turn, would increase the sensation of gratification as a positive reinforcement to psychoactive substances’ dependence6262 Doyon WM, Thomas AM, Ostroumov A, Dong Y, Dani JA. Potential substrates for nicotine and alcohol interactions: a focus on the mesocorticolimbicdopamine system. Biochem Pharmacol 2013; 86(8):1181-1193..

Conclusion

The results of this study indicated an association of variables in the mental health area that reinforce the vulnerability of the smokers investigated, especially for those with low levels of schooling, with no formal employment relationship and about the risk use of alcohol and illicit drugs. Regarding the main finding, high family dysfunction was strongly associated with some degree of nicotine dependence. We emphasize that other realms related to the family setting can corroborate this situation, such as having children and living with non-relatives. When present in the same context, these variables are enhanced, increasing the exposure to comorbidity related to tobacco use and its social, economic and health impact. This study reveals the need to adopt public policies focused on health care that are more effective and comprehensive about family dynamics.

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Publication Dates

  • Publication in this collection
    28 Oct 2019
  • Date of issue
    Nov 2019

History

  • Received
    13 Oct 2017
  • Accepted
    07 Apr 2018
  • Published
    09 Apr 2018
ABRASCO - Associação Brasileira de Saúde Coletiva Rio de Janeiro - RJ - Brazil
E-mail: revscol@fiocruz.br