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Factors associated with smoking initiation among school-aged adolescents

ABSTRACT

Objective

To identify factors associated with smoking initiation in adolescent secondary school students.

Method

This is a cross-sectional study conducted in 2014 with 864 adolescents at a secondary school in southern Brazil. Data were collected using an instrument with sociodemographic questions, application of the Fagerström Nicotine Dependence Scale, and Beck Depression Inventory, and analysed using descriptive statistics, Fisher’s Exact test, Chi-square test, Mann-Whitney’s test, and the Poisson Regression test.

Results

Fifty-four of the adolescents started smoking, of which 35 continued smoking and exhibited high nicotine dependence. Smoking was associated with brown skin (p = 0.020), single-parent household (p = 0.006), a fair family relationship (p = 0.003), and drug users in the family (p = 0.04). A significantly higher prevalence ratio was detected for boys (p = 0.038), higher family income (p> 0.001), living with one family member (p> 0.001), and a fair family relationship (p> 0.001).

Conclusions

We identified factors associated with smoking initiation, revealing the importance of supporting health education strategies to change this reality.

Smoking; Adolescent health; Adolescent behaviour

RESUMO

Objetivo

Identificar os fatores associados à iniciação tabágica em adolescentes escolares.

Método

Estudo transversal realizado em 2014 com 864 adolescentes do ensino médio do sul do Brasil. Os dados foram coletados por meio de instrumento com questões sociodemográficas, da aplicação da Escala de Fagerström e do Inventário de Depressão de Beck, sendo analisados por estatística descritiva, testes Exato de Fisher, Qui-quadrado, Mann-Whitney, T e Regressão de Poisson.

Resultados

Cinquenta e quatro adolescentes iniciaram o comportamento tabágico, desses 35 continuam fumando, com elevada dependência de nicotina. Estiveram associados ao tabagismo: cor parda (p=0,020), famílias monoparentais (p=0,006), regular relação familiar (p=0,003) e familiares usuários de drogas (p=0,04). Apresentaram razão de prevalência significativamente maior: masculino (p=0,038), maior renda familiar (p>0,001), morar com um membro da família (p>0,001), relação familiar regular (p>0,001).

Conclusões

Os fatores identificados como associados à iniciação tabágica, demonstram que existe a necessidade de construir apoio para estratégias de educação em saúde a fim de mudar esta realidade.

Hábito de fumar; Saúde do adolescente; Comportamento do adolescente

RESUMEN

Objetivo

Identificar los factores asociados con el inicio del tabaquismo en adolescentes estudiantes.

Método

Estudio transversal en 2014 con 864 adolescentes de la escuela secundaria en el Sur de Brasil. Recoge instrumento con preguntas sociodemográficas, aplicando el test de Fagerström Inventario de Depresión de Beck, analizados por estadística descriptiva, prueba exacta de Fisher, Chi-cuadrado, Mann-Whitney, T y de regresión de Poisson.

Resultados

Cincuenta y cuatro comenzaron el hábito de fumar, entre ellos, 35 permanecen fumando, con una alta dependencia de la nicotina. Se asociaron con el hábito de fumar personas pardas (p = 0,020), los padres solteros (p = 0,006), relación regular de la familia (p = 0,003) y los usuarios de drogas de la familia (p = 0,04). Ellos tenían significativamente más alta razón de prevalencia: masculino (p = 0,038), mayor ingreso familiar (p> 0,001), que viven con un miembro de la familia (p> 0,001), relación familiar normal (p> 0,001).

Conclusiones

Se identificaron como factores asociados con el inicio del tabaquismo mostrando que hay una necesidad de incrementar el apoyo a las estrategias de educación sanitaria para cambiar esta realidad.

Hábito de fumar; Salud del adolescente; Conducta del adolescente

INTRODUCTION

Adolescence is the period of social transition from child to young adult. This phase involves body transformations and puberty, and is characterised by significant changes in behaviour, the reorganisation of the way of thinking, and the formation of character and personality of youths. In adolescence, external influences, culture, values, responsibilities, and relationships are important causal factors of changes in the identity-building process, and may lead to life-changing and health-related choices, such as the use of psychoactive substances(11. World Health Organization [Internet]. Genava: WHO; c2015- 2017 [cited 2016 Oct 10]. Adolescent development; [about 4 screens]. Available from: www.who.int/maternal_child_adolescent/topics/adolescence/development/en/.
www.who.int/maternal_child_adolescent/to...
).

A study found that the prevalence of smoking among adolescent students is 9.3%(22. Mohammadpoorasl KKA, Esmaeelpour R, Aghazamani F, Rostami F. Tobacco use and substance abuse in students of Karaj universities. Int J Prev Med. 2016 [cited 2016 Oct 13];7:105. Available from: www.ncbi.nlm.nih.gov/pmc/articles/PMC5029117/.
www.ncbi.nlm.nih.gov/pmc/articles/PMC502...
). The National School Health Survey showed that public school students (19.4%) stated they had experimented smoking with more intensity than private school students (12.6%). With regard to adolescent students who have experimented with cigarettes, current consumption reached 30.5% for Brazil(33. Ministério do Planejamento, Desenvolvimento e Gestão (BR), Instituto Brasileiro de Geografia e Estatística. Pesquisa Nacional de Saúde do Escolar 2015. Rio de Janeiro: IBGE; 2016 [citado 2016 out 16]. Disponível em: https://www.icict.fiocruz.br/sites/www.icict.fiocruz.br/files/PENSE_Saude%20Escolar%202015.pdf.
https://www.icict.fiocruz.br/sites/www.i...
).

In adolescence, young smokers and passive smokers can suffer from health problems, such as cardiovascular alterations, alterations to blood pressure and lung function, and a higher prevalence of asthma(44. Alomari MA, Al-Sheyab NA. Cigarette smoking lowers blood pressure in adolescents: the Irbid-TRY. Inhal Toxicol. 2016 [cited 2016 out 05];28(3):140-4. Available from: www.tandfonline.com/doi/full/10.3109/08958378.2016.1145769.
www.tandfonline.com/doi/full/10.3109/089...
-55. Zacharasiewicz A. Maternal smoking in pregnancy and its influence on childhood asthma. ERJ Open Res. 2016 [cited 2016 set 20];2(3):00042-2016. Available from: http://openres.ersjournals.com/content/erjor/2/3/00042-2016.full.pdf.
http://openres.ersjournals.com/content/e...
). In Brazil, in 2011, smoking accounted for 147,072 deaths, 157,126 myocardial infarctions, 75,663 strokes, and 63,753 diagnoses of cancer, resulting in a cost of BRL 23.37 billion to the healthcare system(66. Pinto MT, Pichon-Riviere A, Bardach A. The burden of smoking-related diseases in Brazil: mortality, morbidity and costs. Cad Saúde Pública. 2015 jun [cited 2017 Feb 08]; 31(6):1283-97. Available from: http://dx.doi.org/10.1590/0102-311X00192013.
http://dx.doi.org/10.1590/0102-311X00192...
).

A study(77. Zeitoune RCG, Ferreira VS, Silveira HS, Domingos AM, Maia AC. O conhecimento de adolescentes sobre drogas lícitas e ilícitas: uma contribuição para a enfermagem comunitária. Esc Anna Nery. 2012;16(1):57-63.) reveals that one third of the young smokers have some type of mental health problem, with a prevalence of emotional disorders (38.0%), followed by behavioural (26.7%) and relationship problems (25.8%). The family context and social conviviality can be an important risk factor for initiating the use of psychoactive drugs. Family issues that can trigger drug use include disagreements, diseases, losses in the family, separation of parents, dissatisfaction with the attitude of the parents, and conflicts(88. Loke AY, Mak Y-W. Family process and peer influence on substance use by adolescents. Int J Environ Res Public Health. 2013 [cited 2015 Feb 17];10(9):3868-85. Available from: www.ncbi.nlm.nih.gov/pmc/articles/PMC3799532/pdf/ijerph-10-03868.pdf.
www.ncbi.nlm.nih.gov/pmc/articles/PMC379...
).

Despite the current range and power of globalisation, advancements in healthcare through new studies on the subject, extensive information available on the hazards of tobacco, and the existing legislation, many young people are still interested in the world of smoking(22. Mohammadpoorasl KKA, Esmaeelpour R, Aghazamani F, Rostami F. Tobacco use and substance abuse in students of Karaj universities. Int J Prev Med. 2016 [cited 2016 Oct 13];7:105. Available from: www.ncbi.nlm.nih.gov/pmc/articles/PMC5029117/.
www.ncbi.nlm.nih.gov/pmc/articles/PMC502...
-33. Ministério do Planejamento, Desenvolvimento e Gestão (BR), Instituto Brasileiro de Geografia e Estatística. Pesquisa Nacional de Saúde do Escolar 2015. Rio de Janeiro: IBGE; 2016 [citado 2016 out 16]. Disponível em: https://www.icict.fiocruz.br/sites/www.icict.fiocruz.br/files/PENSE_Saude%20Escolar%202015.pdf.
https://www.icict.fiocruz.br/sites/www.i...
).

Once individuals are dependent on nicotine, the process of quitting smoking is long and difficult. For some, it is a battle they are forced to face, which is why actions to prevent smoking initiation are so important(99. Hoek J, Smith K. A qualitative analysis of low income smokers’ responses to tabacco excise tax increases. Int J Drug Policy [internet]. 2016 [cited Set 30];37:82-89. Available from: www.ijdp.org/article/S0955-3959(16)30275-4/pdf.
www.ijdp.org/article/S0955-3959(16)30275...
). A literature review revealed the scarcity of actions to prevent smoking initiation from ever occurring(1010. Moura MAS, Menezes MFB, Mariano RD, Silva VR, Sousa LP. Intervenções de enfermagem no controle do tabagismo: uma revisão integrativa. Rev Bras Cancerol. 2011;57(3):411-9.).

The relevance of the subject of smoking, difficulties quitting, the importance of control, and the gap in academic literature on smoking initiation motivated this study Initiation, for the authors, means the period of experimentation, moments of decisions, and the actual consumption of tobacco. Based on these considerations, the guiding question of this research was: which factors are associated with smoking initiation in adolescent students? To answer this question, the aim of this study was to identify factors associated with smoking initiation in adolescent secondary school students. The relevance of this study is to collaborate in the improvement of effective care strategies to prevent adolescents from entering the world of tobacco.

METHOD

This is a cross-sectional study from a dissertation entitled, “Fatores que contribuem para a iniciação tabágica em adolescentes de quatro escolas de Porto Alegre e região metropolitana(1111. Teixeira CC. Fatores que contribuem para a iniciação tabágica em adolescentes de quatro escolas de Porto Alegre e região metropolitana [dissertação]. Porto Alegre (RS): Universidade Federal do Rio Grande do Sul, Escola de Enfermagem; 2015.) conducted in four secondary schools (two public and two private) in two cities of southern Brazil. The population was composed of secondary school students enrolled in the selected schools, both sexes, who agreed to participate in the study. The inclusion criteria were students over 12 years of age, since studies show that the average age of smoking initiation lies within this age group(1212. Barreto SM, Giatti L, Casado L, Moura L, Crespo C, Malta DC. Exposição ao tabagismo entre escolares no Brasil. Ciênc Saúde Coletiva. 2010;15(2):3027-34.), enrolled in one of the selected schools, and studying in the current school year. Students with a neurological problem that prevented them from answering the questions were excluded.

The sample size was calculated based on a study(1212. Barreto SM, Giatti L, Casado L, Moura L, Crespo C, Malta DC. Exposição ao tabagismo entre escolares no Brasil. Ciênc Saúde Coletiva. 2010;15(2):3027-34.) that found a prevalence rate of 14.4% of young smokers. Considering a confidence interval of 95% and an acceptable error of 5%, the obtained sample size was 190 adolescents. In all, 1000 adolescents were invited to participate, or the total number of students enrolled in the four secondary schools. Of this total, 864 returned the completed data collection instrument and subsequently constituted the sample of this study.

Data were collected in 2014 using a self-applicable instrument containing sociodemographic questions, such as age, sex, family income, residence, smoking status, and other prepared by the authors; the Beck Depression Inventory(1313. Paranhos ME, Argimon IIL, Werlang BSG. Propriedades psicométricas do Inventário de Depressão de Beck–II (BDI–II) em adolescentes. Aval Psicol. 2010;9(3):383-92.); and application of the Fagerström Nicotine Dependence Scale(1414. Carmo JT, Pueyo AA. A adaptação ao português do Fageström Test for Nicotine Dependence (FTND) para avaliar a dependência e tolerância à nicotina em fumantes brasileiros. Rev Bras Med. 2002;59(1/2):73-80.) for those who stated they were “smokers”. These two scales are validated for use in Brazil. The Fagerström Scale assesses nicotine dependence using a six-question form with a scale from zero to ten, where 0-2 points = very low, 3-4 points = low, 5 = average, 6-7 points = high, and 8-10 points = very high dependency. The Beck Depression Inventory was used to evaluate the intensity of depressive symptoms. It contains 21 closed questions with four answer options for each question; each answer has a score of 0-3, indicating the severity of symptoms. Scores under 10 represent the absence of depression; from 10 to 18, mild depression; from 19 to 29, moderate depression; and scores above 30, severe depression. The instruments were handed to students during school hours at previously scheduled times with the teachers.

The adolescents were informed of the nature and importance of the study and the confidentiality of their participation in the research. After the subjects answered the questions, the instruments were collected in sealed envelope. The average time of instrument completion per class was 20 minutes.

To ensure adequacy of the content and language of the instrument used with the adolescents, a test pilot was run with a class of 32 students selected according to the study inclusion criteria. The content of the instrument was not altered after the pilot test, so the test participants were part of the sample.

The collected data were entered into a database and analysed using the Statistical Package for Social Sciences (SPSS) version 18.0. The data were initially subjected to descriptive analysis and the categorical variables were represented by absolute and relative frequency. The quantitative variables were represented by average, standard deviation and quartiles. The chi-square test or Fisher’s exact test was used to detect associations between the categorical variables. The average age of the smokers and non-smokers was compared using the t test, and the distribution of the Beck Depression score between the groups was compared using the Mann-Whitney test. The association between the studied factors and the groups (adolescent smokers and non-smokers) was estimated using the Prevalence Ratio (PR) modelled for the Poisson regression.

The association between the studied factors and the groups (smokers and non-smokers) was estimated using the Prevalence Ratio (PR) modelled for Poisson regression with robust estimator. The regression was used to confirm the relationship between the surveyed variables and the groups. Univariate modelling was initially performed. The regressions with p-value less than 0.10 were selected and initiated in the multivariate regression model. Of all the variables of the model that were not significant, with the least relation, that is, the variable with a highest p was removed and the model was run again. The final multivariate model only contains significant variables. The adopted significance level was 0.05.

For this study, smokers were considered adolescents who smoke every day, sporadically, or who smoked regularly for less than six months, and non-smokers were adolescents who had only experimented with cigarettes, but did not become smokers.

The selected schools were visited in advance to obtain approval of the directors to conduct research. Firstly, we visited the classrooms to explain the purpose of the research, invite the students to participate and deliver the terms to the interested students. The adolescents who agreed to participate signed an approval form and took the informed consent statements to their guardians for signing. These statements were returned to researchers before data collection, thus formalising their disposition to participate in the study. The anonymity of the subjects was guaranteed, together with the condition to use the information they provided for research purposes only, after which it would be filed, as determined by law. The adolescent felt some discomfort when answering the questions in the instrument, which can be considered minimal risk.

This study observed the guidelines and regulatory standards of human research, established in resolution 466/2012 of the national health council, and the project was approved by the research ethics committee of the Universidade Federal do Rio Grande do Sul, #508.378 in 9 January 2014.

RESULTS

In all, 864 students participated in the study or 86.4% of the student population of the four surveyed schools. Table 1 shows the characteristics of the sample.

Table 1
– Characteristics of the sample. Porto Alegre, RS, Brazil 2014

Of the participants, 466 (54.1%) were girls, 621 (71.9%) studied at public school, 613 (71%) lived with their parents and siblings, and 669 were white (78%). Regarding the use of drugs, 54 (6.3%) exhibited smoking initiation, and 35 (64.8%) of these student stated they continued smoking on a daily basis.

Table 2 shows the results of the associations of the smoking factor with the other studied variables.

Table 2
– Association of the smoking factor with the studied variables. Porto Alegre, 2014

Table 3 shows the results of the Poisson regression analysis in the univariate and multivariate model with the outcome variable “adolescent smoker”.

Table 3
– Analysis of regression in the proportions of groups of adolescent smokers and non-smokers. Porto Alegre, 2014

The multivariate analysis showed some significant associations with the tobacco factor. The relationship of colour, monthly household income, living with, family relationship, age, and smoking were all factors with a significant effect when analysed together.

The brown-skinned adolescents had a higher prevalence of smoking, while the white adolescents had the lowest prevalence (p = 0.020). The regression analysis showed that the prevalence of smoking initiation in the brown-skinned population is 141% greater than in the white population (p = 0.012).

Moreover, the variable “living with” was associated with the variable outcome (p = 0.006); the adolescents considered non-smokers live with their parents and siblings, while a higher proportion of smokers live “with father or mother only” or with “another other family member, such as grandmother or uncle.”

The Poisson regression analysis showed that the adolescents who only live with the father or the mother and those who live with relatives such as grandparents, uncles and others prevailed in the smoking initiation category, with 143% and 77%, respectively, compared to those who live with both parents and siblings (p<0.001).

The association test showed that adolescent smokers have fair family relationships (p = 0.003), and the prevalence of smoking initiation for adolescents with this type of family arrangement is 229% greater compared to those who have a great family relationship (p<0.001).

The adolescent smokers were mostly from families with members who were dependent on licit and illicit drugs, while non-smokers came from families whose members did not use drugs (p = 0.04). The regression analysis showed that families of drug users have a 79% higher prevalence of adolescent smokers than those without a family history of drug use.

The median age of the groups of adolescent smokers and non-smokers was 17 [16; 17] and 15 [15; 16] respectively, statistically different, p<0.001, while the regression analysis indicated a 56% increase in the prevalence of smoking for each year of age (p<0.001).>

The median score of the Fagerström scale was 7 [5; 7], revealing a high level of nicotine addiction. The median score for the Beck Depression Inventory in the group of adolescent smokers was 8 [3.5; 12], which means that the individual is not potentially depressive. In the group of non-smoker adolescents, the score was 5 [1; 10], which also means that the individual is not potentially depressive, despite presenting a significant difference (p = 0.007). The regression analysis showed an increase in the prevalence of smoking that grew 5% for every increasing point of the Beck Depression Inventory score (p<0.001).

In the analysis of association, the variables sex and smoking and income and smoking were not statistically significant; however, the regression analysis showed that the prevalence of smoking initiation among the boys was 49% higher than among the girls (p = 0.010), and that the prevalence of adolescent smokers from families with a household income of more than nine minimum wages was 111% higher than for the families with an income of 1 to 3 wages (p = 0.004).

DISCUSSION

We observed several factors that may be associated with smoking initiation among adolescents, one of which was skin colour. This evidence could be related to the cultural and social marginalisation and exclusion, and the lower financial conditions of the black and brown-skinned population. Issues related to skin colour and involvement with smoking are rarely discussed in literature, probably because in other studies this difference does not have a statistical significance(1515. Menezes AHR, Dalmas JC, Scarinci IC, Maciel SM, Cardelli AAM. Fatores associados ao uso regular de cigarros por adolescentes estudantes de escolas públicas de Londrina, Paraná, Brasil. Cad Saude Publica. 2014 [citado 2014 dez 10];30(4):774-84. Disponível em: www.scielosp.org/pdf/csp/v30n4/0102-311X-csp-30-4-0774.pdf.
www.scielosp.org/pdf/csp/v30n4/0102-311X...
).

The prevalence of adolescent smokers in families with a monthly income of more than nine minimum wages was 111% higher than that of families who earn up to one minimum wage. This difference indicates that higher-income families probably provide their children with an allowance and greater purchasing power, which enables them to make decisions and purchases without the financial barrier. This fact, along with the time to focus on experimentation, self-affirmation, and transgression, often induces them to try cigarettes.

In this study, the median age of the adolescents was 17, which is higher than the age of those who do not smoke, increasing the chance of the adolescent becoming a smoker by 56% for every year of age. A study shows that the greater age of the adolescent is associated with a higher risk of smoking initiation(1515. Menezes AHR, Dalmas JC, Scarinci IC, Maciel SM, Cardelli AAM. Fatores associados ao uso regular de cigarros por adolescentes estudantes de escolas públicas de Londrina, Paraná, Brasil. Cad Saude Publica. 2014 [citado 2014 dez 10];30(4):774-84. Disponível em: www.scielosp.org/pdf/csp/v30n4/0102-311X-csp-30-4-0774.pdf.
www.scielosp.org/pdf/csp/v30n4/0102-311X...
). This finding demonstrates the extent to which adulthood and the fascination of adolescents for this stage of life can influence the decisions they make.

Fair or bad family relations can be associated with adolescent smokers, and the rate of smoking initiation among adolescents who have family relations considered fair or bad is 195% higher than among those who have a great family relationship. A study conducted in Hong Kong(88. Loke AY, Mak Y-W. Family process and peer influence on substance use by adolescents. Int J Environ Res Public Health. 2013 [cited 2015 Feb 17];10(9):3868-85. Available from: www.ncbi.nlm.nih.gov/pmc/articles/PMC3799532/pdf/ijerph-10-03868.pdf.
www.ncbi.nlm.nih.gov/pmc/articles/PMC379...
) on the types of family relationships found that the adolescents who have authoritarian parents or a conflicting relationship with their patents are more prone to smoking and drinking, respectively, while young people with more permissive parents are less likely to drink.

The regression analysis showed that adolescents who only live with one parent, or those who live with family members such as grandparents, uncles and others, have a higher prevalence of smoking initiation than those who live with both parents and siblings. Similarly, a study(88. Loke AY, Mak Y-W. Family process and peer influence on substance use by adolescents. Int J Environ Res Public Health. 2013 [cited 2015 Feb 17];10(9):3868-85. Available from: www.ncbi.nlm.nih.gov/pmc/articles/PMC3799532/pdf/ijerph-10-03868.pdf.
www.ncbi.nlm.nih.gov/pmc/articles/PMC379...
) found that adolescents who live in single-parent households are more likely to become smokers, and this index can increase if they have siblings who smoke.

The same study(88. Loke AY, Mak Y-W. Family process and peer influence on substance use by adolescents. Int J Environ Res Public Health. 2013 [cited 2015 Feb 17];10(9):3868-85. Available from: www.ncbi.nlm.nih.gov/pmc/articles/PMC3799532/pdf/ijerph-10-03868.pdf.
www.ncbi.nlm.nih.gov/pmc/articles/PMC379...
) points to possible difficulties that the family and adolescent could be facing, such as the absence of a parent, financial hardship or an excessive workload. These factors are considered possible causes of smoking initiation since smoking is seen as form of relief from the psychological stress. This finding reinforces the importance of good family relationships and support – a tool that can help build specific strategies for this population.

The presence of illegal and legal drug users in the family was statistically significant when associated with smoking in adolescence, reaching a 79% higher prevalence in relation to families without a history of drug use. The studied adolescents reported they had family members who smoke inside and outside the home and members who use other drugs. A study showed that adolescents who have parents or friends who smoke are more likely to try smoking than those who do not have parents or friends who smoke(22. Mohammadpoorasl KKA, Esmaeelpour R, Aghazamani F, Rostami F. Tobacco use and substance abuse in students of Karaj universities. Int J Prev Med. 2016 [cited 2016 Oct 13];7:105. Available from: www.ncbi.nlm.nih.gov/pmc/articles/PMC5029117/.
www.ncbi.nlm.nih.gov/pmc/articles/PMC502...
). This finding reveals that adolescents are influenced by their loved ones to start smoking inside the home. Adolescents with family members who smoke at home grow up believing smoking is natural, which can induce them to initiate this habit.

In this study, we observed that the prevalence of smoking initiation among the boys was 49% higher than among the girls. A study conducted in another southern state of Brazil also found higher prevalence of male adolescent smokers(1515. Menezes AHR, Dalmas JC, Scarinci IC, Maciel SM, Cardelli AAM. Fatores associados ao uso regular de cigarros por adolescentes estudantes de escolas públicas de Londrina, Paraná, Brasil. Cad Saude Publica. 2014 [citado 2014 dez 10];30(4):774-84. Disponível em: www.scielosp.org/pdf/csp/v30n4/0102-311X-csp-30-4-0774.pdf.
www.scielosp.org/pdf/csp/v30n4/0102-311X...
). This evidence resumes discussions on gender issues, which still have a huge impact on the health of men and women in terms of decisions, already present in adolescents. A meta-analysis found that active or passive exposure to smoking is associated with an increased risk for allergic pulmonary diseases, and passive smoking is associated with food allergies in children and adolescents(1616. Saulyte J, Regueira C, Montes-Martínez A, Khudyakov P, Takkouche B. Active or passive exposure to tobacco smoking and allergic rhinitis, allergic dermatitis, and food allergy in adults and children: a systematic review and meta-analysis. PLoSMed. 2014 [cited 2015 Jun 20];11(3). Available from: http://journals.plos.org/plosmedicine/article/file?id=10.1371/journal.pmed.1001611&type=printable.
http://journals.plos.org/plosmedicine/ar...
). In relation to girls, a study in Finland revealed that smoking interferes with the quality of the production of antibodies in vaccine processes in adolescents, as in the case of the vaccine against the Human Papilloma Virus (HPV)(1717. Namujju PB, Pajunen E, Simen-Kapeu A, Hedman L, Merikukka M, Surcel HM, et al. Impact of smoking on the quantity and quality of antibodies induced by human papillomavirus type 16 and 18 AS04-adjuvanted virus-like-particle vaccine: a pilot study. BMC Res Notes. 2014 [cited 2015 Feb 20];7:445. Available from: http://www.biomedcentral.com/1756-0500/7/445.
http://www.biomedcentral.com/1756-0500/7...
).

The median of eight on the Beck Depression Inventory means that the students were not potentially depressive; however, the regression analysis showed that isolated depressive symptoms can increase the prevalence of smoking by 5% for every point in this scale (p<0.001). These results suggest that smoking can be seen as an escape from anxiety, problems in the family, with friends, or even at school.

A study found that the stress experienced at school is strongly associated with depressive symptoms(1818. Rao S, Aslam SK, Zaheer S, Shafique K. Anti-smoking initiatives and current smoking among 19,643 adolescents in South Asia: findings from the Global Youth Tobacco Survey. Harm Reduct J. 2014[cited 2015 Feb 20];11:8. Available from: http://harmreductionjournal.biomedcentral.com/articles/10.1186/1477-7517-11-8.
http://harmreductionjournal.biomedcentra...
), suggesting the power of the subjects’ relationships with their peers in the pursuit of self-protection. Studies show the influence of friends who smoke on the smoking initiation of youths(1515. Menezes AHR, Dalmas JC, Scarinci IC, Maciel SM, Cardelli AAM. Fatores associados ao uso regular de cigarros por adolescentes estudantes de escolas públicas de Londrina, Paraná, Brasil. Cad Saude Publica. 2014 [citado 2014 dez 10];30(4):774-84. Disponível em: www.scielosp.org/pdf/csp/v30n4/0102-311X-csp-30-4-0774.pdf.
www.scielosp.org/pdf/csp/v30n4/0102-311X...
). This evidence reinforces the power of the circle of friends and family when youths have to make decisions, thus indicating a much more comprehensive diagnosis.

A study with adolescents sought to reveal the distinctions between the experimenters that evolved to currently smoking and those who did not experiment. It was observed that the risk factors significantly associated with the transition from experimentation with cigarettes to smoking were current alcohol consumption, illicit drug use and friends who smoke(1919. Bonilha AG, Ruffino-Neto A, Sicchieri MP, Achcar JA, Rodrigues-Júnior AL, Baddini-Martinez J. Correlatos de experimentação e consumo atual de cigarros entre adolescentes. J Bras Pneumol. 2014;40(6):634-42.). The practice of a religion was pinpointed as a protective factor against smoking initiation(2020. Santos ARM, Oliveira LMF, Farias Júnior JC, Silva PPC, Silva EAPC, Freitas CMSM Associação entre prática religiosa e comportamentos de risco à saúde em adolescentes de Pernambuco, Brasil. Rev Bras Ativ Fís Saúde. 2015;20(3):284-96.). These findings suggest that a good psychological and physical structure, self-esteem, personality, and spirituality can make a difference in the lives of youths in times of difficult decisions and social pressure.

The emergence of adolescent smokers can indicate a network that needs support because it is leading youths toward the world of smoking, considering they are usually aware of the hazard they are assuming. A study identified the family health strategy (“ESF”) as the healthcare service that is closer to schools and youths, and this service includes the nurse(2121. Souza TT, Pimenta AM. Características das ações de educação em saúde para adolescentes. Rev Enferm Cent O Min. 2013;3(1):587-96.). This finding shows the potential of this professional in healthcare education and the fight against smoking initiation inside communities. Given their proximity with users, they can approach youths to a better quality of life away from tobacco, alcohol, and other drugs through bonding with these adolescents and the community as a whole.

The prevalence of adolescents who started smoking was 6.3%, which is lower than the percentage found in study in Brazilian capitals(1212. Barreto SM, Giatti L, Casado L, Moura L, Crespo C, Malta DC. Exposição ao tabagismo entre escolares no Brasil. Ciênc Saúde Coletiva. 2010;15(2):3027-34.), suggesting the existence of different prevalence between the capital cities and regions of Brazil. These results also suggest that, although the smoking-related behaviour is analysed in the same period of life, the prevalence of adolescents in various places occurs differently. This data alerts to the importance of environmental influences on whether an adolescent will or will not become a smoker, and the need to better understand the variables that individually surround each adolescent who becomes a smoker; evidently, the mere detection of associated factors is insufficient to understand the dynamics of smoking initiation in adolescence.

CONCLUSION

The study identified several factors that may be associated with smoking initiation in adolescents, especially skin colour, age, a healthy family relationship, social conviviality, sex and, income.

Older boys with brown skin and a higher household income were more susceptible to the onset of smoking, which contradicts the previously observed trend that people with a lower income are more prone to smoking. The start of adult life was considered a moment of possibilities, so the older the adolescent and the better the financial condition, the greater the risk of him or her becoming a smoker. Aspects of the personal and social lives of adolescents, such as fair and bad family relationships, relatives who use licit and illicit drug, living with a single parent or with another family member such as uncle, grandfather or boyfriend, and the presence of depressive symptoms also had a significant influence on smoking initiation.

The difficulties faced by the adolescents during the construction of their identities may cause them to seek relief from stress and anxiety, and the cigarette becomes an outlet for their problems. These results point to the need for health and education professionals to understand how these factors are interfering in the lives of adolescents, and how they perceive and deal with these situations. Greater insight into this reality can enable better guidance and support for youths as they struggle to cope with this transition to prevent smoking initiation from occurring.

Bonding and support through healthcare education at schools and within the scope of the family health strategy can potentially change this reality. Through education, research, and assistance for adolescent smokers, nurses can contribute to the fight against drug use, and help provide adolescents with quality of life without tobacco by increasing awareness of themselves and their choices.

It is important to stress that the method of measuring the outcome variable was the information provided by the adolescents, which may have caused embarrassment, the minimisation/hiding of facts to avoid exposure, and the subsequent underestimation of results, thus characterising a possible limitation of the study.

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Publication Dates

  • Publication in this collection
    2017

History

  • Received
    27 Oct 2016
  • Accepted
    14 Feb 2017
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