<p>The onset of cigarette smoking begins primarily in adolescence, and prevalence of smoking among adolescents has been increased during the last ten years. The prevalence of adolescent smoking increases with age and is more common or at least as common in girls as in boys in most western countries.</p><p>Until recently the intensive investigation on health effects of smoking has been mostly conducted among adults. In adolescence the long-term health consequences have been reviewed, but current health problems are probably more important to adolescents and may be more motivating for smoking prevention and cessation. Increased morbidity among adolescent smokers has been reported, but specific current health problems and medication use have received little attention. More</p><p>Control of smoking is a primary health goal. An underlying premise for promotion of physical activity in adolescence is that it may mead to a healthy lifestyle persisting through adulthood. Encouraging participation in sports has been recommended as smoking prevention and as part of smoking cessation programs. Smoking habits within different types of sports has received less attention, and whether physical activity has an impact on lung function is debated.</p><p>Adolescent smokers are often unsuccessful in quitting and difficult to recruit and retain in smoking cessation programs. Occasional smoking may be the strongest risk factor for daily smoking, but occasional smokers could be an important target group for smoking cessation who could be discouraged from moving into daily smoking status. </p><p>The first aim of this thesis was to study associations between smoking and current health status by examining associations between daily smoking and subjective health problems (Paper 1), and gender specific effects on respiratory symptoms and lung function (Paper II). The associations between physical activity and lung function in never smokers and daily smokers were also assessed (Paper III). The second aim was to study factors that might be useful in smoking</p>

The onset of cigarette smoking begins primarily in adolescence, and prevalence of smoking among adolescents has been increased during the last ten years. The prevalence of adolescent smoking increases with age and is more common or at least as common in girls as in boys in most western countries. Until recently the intensive investigation on health effects of smoking has been mostly conducted among adults. In adolescence the long-term health consequences have been reviewed, but current health problems are probably more important to adolescents and may be more motivating for smoking prevention and cessation. Increased morbidity among adolescent smokers has been reported, but specific current health problems and medication use have received little attention. More Control of smoking is a primary health goal. An underlying premise for promotion of physical activity in adolescence is that it may mead to a healthy lifestyle persisting through adulthood. Encouraging participation in sports has been recommended as smoking prevention and as part of smoking cessation programs. Smoking habits within different types of sports has received less attention, and whether physical activity has an impact on lung function is debated. Adolescent smokers are often unsuccessful in quitting and difficult to recruit and retain in smoking cessation programs. Occasional smoking may be the strongest risk factor for daily smoking, but occasional smokers could be an important target group for smoking cessation who could be discouraged from moving into daily smoking status. The first aim of this thesis was to study associations between smoking and current health status by examining associations between daily smoking and subjective health problems (Paper 1), and gender specific effects on respiratory symptoms and lung function (Paper II). The associations between physical activity and lung function in never smokers and daily smokers were also assessed (Paper III). The second aim was to study factors that might be useful in smoking

INTRODUÇÃO: A rinossinusite crônica (RSC) é uma doença comum na população, com documentada repercussão na qualidade de vida e com alto custo direto em saúde pública que engloba consultas médicas, exames complementares e radiológicos, internações hospitalares, cirurgias e tratamento medicamentoso. Apresenta também custos indiretos como diminuição da produtividade no trabalho e absenteísmo. Os dados epidemiológicos sobre rinossinusite crônica são escassos; e as definições de rinossinusite crônica estabelecidas, as metodologias das pesquisas e as taxas de respostas diferem muito entre si. A pesquisa epidemiológica da RSC é importante para avaliar sua distribuição, analisar seus fatores de risco e fornecer dados para promoção de políticas de saúde pública, entretanto não existem dados epidemiológicos sobre a prevalência desta doença em nossa população. MÉTODO: Foi realizado um inquérito transversal de base populacional (survey) com plano de amostragem complexo realizado em dois estágios: setor censitário e domicílio. Entrevistas foram conduzidas pessoalmente, através de entrevistadores treinados, em 2003 indivíduos com idade de 12 anos ou mais, residentes da cidade de São Paulo. O questionário incluiu o diagnóstico de rinossinusite crônica segundo os critérios epidemiológicos estabelecido pelo EP3OS. Dados demográficos, diagnóstico médico autorreferido de doenças respiratórias (asma, sinusite, rinite), tabagismo, renda familiar, nível educacional e características do domicílio também foram incluídas. RESULTADOS: A taxa de resposta total foi de 87,8%. A idade média foi de 39,8 anos (DP= 21, 12-92), 45,33% do sexo masculino. A prevalência da rinossinusite crônica na cidade de São Paulo foi de 5,51% (IC 95%=3,99-7,58). Não existiu uma diferença estatisticamente significativa na prevalência segundo o sexo. Foi encontrada uma associação estatisticamente significativa do diagnóstico de RSC com o diagnóstico de asma (OR=3.88), de rinite (OR=5,02) e com o subgrupo de baixa renda (OR=2,28) As prevalências de RSC segundo o estado tabágico (p=0,43), consumo tabágico em anos.maço (p=0,26) e tabagismo passivo intradomiciliar (p=0,18) não apresentaram uma diferença estatisticamente significativa. CONCLUSÃO: A prevalência estimada de RSC na população da cidade de São Paulo é de 5,51% (aproximadamente 500.000 indivíduos). Foi encontrada associação com rinite, asma e com o subgrupo de baixa renda. Não houve associação com tabagismo / INTRODUCTION: Chronic rhinosinusitis (CRS) is a common disease with proven repercussions on quality of life and a high burden of direct costs to public health, which included physician visits, laboratory tests and medical imaging, hospital admissions, surgical intervention, and medical treatment. It also carries indirect costs, such as decreased productivity in the workplace and absenteeism. Epidemiological data on CRS are scarce, and the established definitions of CRS, study methods, and response rates vary widely. Epidemiological research into CRS is important to assess its distribution, analyze its risk factors, and provide data to subsidize public health policies; however, there are no epidemiological data on the prevalence of this disease in our population. METHOD: This was a cross-sectional population-based survey with a complex cluster sampling plan carried out in two stages: census sector and household. Interviews of 2,003 individuals, aged 12 years or older and living in the city of São Paulo, were conducted face-to-face by trained investigators. The questionnaire included diagnosis of CRS according to the epidemiological criteria established by EP3OS. Demographic data, a self-reported history of physician-diagnosed respiratory diseases (asthma, sinusitis, rhinitis), smoking, family income, educational attainment, and household characteristics were also included. RESULTS: The overall response rate was 87.8%. The mean age was 39.8 years (SD = 21 years; range = 12-92), and 45.33% were male. The prevalence of CRS in the city of São Paulo was 5.51% (95%CI = 3.99-7.58). There was no statistically significant difference in prevalence between the sexes. Statistically significant associations were found between diagnosis of CRS and diagnosis of asthma (OR=3.88), of rhinitis (OR=5.02), and belonging to the low-income subgroup (OR=2.28) The prevalences of CRS according to smoking status (p=0.43), tobacco intake in pack years (p=0.26) or exposure to passive smoking in the household (p=0.18) did not exhibit a statistically significant difference. CONCLUSION: The estimated population-wide prevalence of CRS in the city of São Paulo is 5.51% (approximately 500,000 individuals). Associations were found with rhinitis, asthma, and low income. There was no association with smoking

INTRODUÇÃO: A rinossinusite crônica (RSC) é uma doença comum na população, com documentada repercussão na qualidade de vida e com alto custo direto em saúde pública que engloba consultas médicas, exames complementares e radiológicos, internações hospitalares, cirurgias e tratamento medicamentoso. Apresenta também custos indiretos como diminuição da produtividade no trabalho e absenteísmo. Os dados epidemiológicos sobre rinossinusite crônica são escassos; e as definições de rinossinusite crônica estabelecidas, as metodologias das pesquisas e as taxas de respostas diferem muito entre si. A pesquisa epidemiológica da RSC é importante para avaliar sua distribuição, analisar seus fatores de risco e fornecer dados para promoção de políticas de saúde pública, entretanto não existem dados epidemiológicos sobre a prevalência desta doença em nossa população. MÉTODO: Foi realizado um inquérito transversal de base populacional (survey) com plano de amostragem complexo realizado em dois estágios: setor censitário e domicílio. Entrevistas foram conduzidas pessoalmente, através de entrevistadores treinados, em 2003 indivíduos com idade de 12 anos ou mais, residentes da cidade de São Paulo. O questionário incluiu o diagnóstico de rinossinusite crônica segundo os critérios epidemiológicos estabelecido pelo EP3OS. Dados demográficos, diagnóstico médico autorreferido de doenças respiratórias (asma, sinusite, rinite), tabagismo, renda familiar, nível educacional e características do domicílio também foram incluídas. RESULTADOS: A taxa de resposta total foi de 87,8%. A idade média foi de 39,8 anos (DP= 21, 12-92), 45,33% do sexo masculino. A prevalência da rinossinusite crônica na cidade de São Paulo foi de 5,51% (IC 95%=3,99-7,58). Não existiu uma diferença estatisticamente significativa na prevalência segundo o sexo. Foi encontrada uma associação estatisticamente significativa do diagnóstico de RSC com o diagnóstico de asma (OR=3.88), de rinite (OR=5,02) e com o subgrupo de baixa renda (OR=2,28) As prevalências de RSC segundo o estado tabágico (p=0,43), consumo tabágico em anos.maço (p=0,26) e tabagismo passivo intradomiciliar (p=0,18) não apresentaram uma diferença estatisticamente significativa. CONCLUSÃO: A prevalência estimada de RSC na população da cidade de São Paulo é de 5,51% (aproximadamente 500.000 indivíduos). Foi encontrada associação com rinite, asma e com o subgrupo de baixa renda. Não houve associação com tabagismo / INTRODUCTION: Chronic rhinosinusitis (CRS) is a common disease with proven repercussions on quality of life and a high burden of direct costs to public health, which included physician visits, laboratory tests and medical imaging, hospital admissions, surgical intervention, and medical treatment. It also carries indirect costs, such as decreased productivity in the workplace and absenteeism. Epidemiological data on CRS are scarce, and the established definitions of CRS, study methods, and response rates vary widely. Epidemiological research into CRS is important to assess its distribution, analyze its risk factors, and provide data to subsidize public health policies; however, there are no epidemiological data on the prevalence of this disease in our population. METHOD: This was a cross-sectional population-based survey with a complex cluster sampling plan carried out in two stages: census sector and household. Interviews of 2,003 individuals, aged 12 years or older and living in the city of São Paulo, were conducted face-to-face by trained investigators. The questionnaire included diagnosis of CRS according to the epidemiological criteria established by EP3OS. Demographic data, a self-reported history of physician-diagnosed respiratory diseases (asthma, sinusitis, rhinitis), smoking, family income, educational attainment, and household characteristics were also included. RESULTS: The overall response rate was 87.8%. The mean age was 39.8 years (SD = 21 years; range = 12-92), and 45.33% were male. The prevalence of CRS in the city of São Paulo was 5.51% (95%CI = 3.99-7.58). There was no statistically significant difference in prevalence between the sexes. Statistically significant associations were found between diagnosis of CRS and diagnosis of asthma (OR=3.88), of rhinitis (OR=5.02), and belonging to the low-income subgroup (OR=2.28) The prevalences of CRS according to smoking status (p=0.43), tobacco intake in pack years (p=0.26) or exposure to passive smoking in the household (p=0.18) did not exhibit a statistically significant difference. CONCLUSION: The estimated population-wide prevalence of CRS in the city of São Paulo is 5.51% (approximately 500,000 individuals). Associations were found with rhinitis, asthma, and low income. There was no association with smoking