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OBJECTIVE: Environmental tobacco smoke exposure is a well-recognized risk factor for asthma development and poor asthma control in children. However, the relationship between changes in parental smoking habits over time and the prevalence of childhood asthma remains largely unknown. Our objective was to investigate the trends of parental smoking behaviors in relation to childhood wheeze/asthma rates over a 20-year period. SUBJECTS AND METHODS: A standardized questionnaire on household overall smoking and household indoor tobacco smoking (HITS) habits was distributed to 8-9-years-old school children in the context of five cross-sectional surveys conducted in 1998 (n=3,076), 2003 (n=2,725), 2008 (n=2,688), 2013 (n=2,554) and 2018 (n=2,648). RESULTS: The parental overall smoking and HITS rates have substantially decreased during the study period (p-for-trend<0.001). However, while HITS declined among the fathers of asthmatic and non-asthmatic children as well as among the mothers of non-asthmatic ones (p-for-trend<0.001), it remained unchanged in the case of the mothers of asthmatic participants (p-for-trend 0.283). The mothers of asthmatic children consistently reported more HITS than those of non-asthmatic participants, while prevalence changes of current wheeze/asthma over the surveillance period were in complete agreement with changes in maternal HITS (cross-correlation coefficient 0.918 at zero-year lag) but not with paternal smoking behaviors. CONCLUSIONS: Overall and indoor smoking rates of school children's adult family members declined substantially during the 1998-2018 period in Greece. However, no such trend was noted among mothers of asthmatic children, while temporal changes in maternal indoor smoking rates occurred in parallel with those of childhood asthma prevalence.
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Asma , Fumar , Adulto , Criança , Feminino , Humanos , Asma/epidemiologia , Estudos Transversais , Grécia/epidemiologia , Mães , Prevalência , Fumar/efeitos adversos , Fumar/epidemiologia , Fumar Tabaco/efeitos adversos , Fumar Tabaco/epidemiologia , MasculinoRESUMO
We report a rare case of non-cystic fibrosis bronchiectasis accompanied by protracted infection with Aggregatibacter aphrophilus in a 12-year-old boy with haemoptysis.
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BACKGROUND: Epidemiological evidence suggests the existence of a direct link between allergic rhinitis (AR) and asthma. Several studies also support the presence of small-airway dysfunction (SAD) in non-asthmatic children with AR. However, it remains unknown whether SAD can predict the progression of AR to asthma. Our objective was to explore the existence of SAD in non-asthmatic children with AR and to assessed its ability to predict the development of asthma. METHODS: Seventy-three 6-year-old children with intermittent moderate-severe AR but without asthma symptoms/medication within the last two years, underwent spirometry and measurement of respiratory resistance (Rrs) and reactance (Xrs) before and after bronchodilation (BD) (300mcg salbutamol). Lung function measurements were performed in the absence of nasal symptoms and repeated at AR exacerbation. SAD was defined as >30% decrease in Rrs or >50% increase in Xrs at 6 or 8Hz post-BD. Participants were followed for five years. RESULTS: Twenty-three children (31.5%) developed asthma; this group presented significant post-BD changes in Rrs and Xrs, but only at AR exacerbation. The ability of these changes to predict the development of asthma was exceptional and superior to that of the spirometric parameters. SAD (22 children, 30.1%), emerged as the single most efficient predictor of asthma, independently of other risk factors such as parental asthma, personal history of eczema and type of allergic sensitisation. CONCLUSION: SAD precedes the development of asthma in children with AR. Changes in respiratory impedance at AR exacerbation may assist in identifying those at risk to progress to asthma.
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Asma/fisiopatologia , Rinite Alérgica/fisiopatologia , Adulto , Asma/etiologia , Progressão da Doença , Feminino , Humanos , Estudos Longitudinais , Masculino , Testes de Função Respiratória , Rinite Alérgica/complicaçõesRESUMO
The diagnosis of asthma is currently based on clinical history, physical examination and lung function, and to date, there are no accurate objective tests either to confirm the diagnosis or to discriminate between different types of asthma. This consensus exercise reviews the state of the art in asthma diagnosis to identify opportunities for future investment based on the likelihood of their successful development, potential for widespread adoption and their perceived impact on asthma patients. Using a two-stage e-Delphi process and a summarizing workshop, a group of European asthma experts including health professionals, researchers, people with asthma and industry representatives ranked the potential impact of research investment in each technique or tool for asthma diagnosis and monitoring. After a systematic review of the literature, 21 statements were extracted and were subject of the two-stage Delphi process. Eleven statements were scored 3 or more and were further discussed and ranked in a face-to-face workshop. The three most important diagnostic/predictive tools ranked were as follows: "New biological markers of asthma (eg genomics, proteomics and metabolomics) as a tool for diagnosis and/or monitoring," "Prediction of future asthma in preschool children with reasonable accuracy" and "Tools to measure volatile organic compounds (VOCs) in exhaled breath."
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Asma/diagnóstico , Prioridades em Saúde , Pesquisa , Biomarcadores , Testes Respiratórios , Consenso , Europa (Continente) , Humanos , Metabolômica/métodos , Prognóstico , Testes de Função RespiratóriaRESUMO
BACKGROUND: Antioxidant intake changes have been implicated with the increase in asthma and allergies outcomes, but no clear association has been revealed. In this cross sectional study, the overall effect of antioxidants on asthma and allergic diseases was studied. METHODS: Data from the cohorts of the phase II ISAAC survey (2023 children 9-10 years old) in two metropolitan Greek cities were analysed. Using a semi-quantitative food frequency questionnaire, an Antioxidant Eating Index (AEI, range 0-6) was created with the pro-antioxidant (vegetables, fruits, fresh juice, fish) and the non-antioxidant (meat, burgers) food intake and was evaluated with allergic diseases. Higher values of the score suggest closer to an "antioxidant" and lesser to a "saturated fatty" diet. RESULTS: Prevalence of lifetime and current asthma, current rhinitis and sensitisation were higher in Thessaloniki compared to Athens. The AEI score of the entire cohort was 4.2 ± 1.2 (median 4.0) and was higher in Athens compared to Thessaloniki (4.3 ± 1.2 vs. 4.0 ± 1.2, p=0.001) and in girls than boys (4.3 ± 1.1 vs. 4.0 ± 1.2, p=0.001). AEI was inversely associated with lifetime asthma (OR: 0.87, 95%CI 0.77, 0.99) in either cities independently of other cofounders such as family history, sensitisation, exercise, house smoking, breast feeding, pet or dampness in houses. No association with other allergic disease or sensitisation was detected. CONCLUSION: Antioxidant foods seem to be a non-pharmacological, protective dietary pattern for asthma development in children irrespectively of atopy or heredity; AEI was a rough indicator and the role of antioxidants in allergic diseases is still under consideration.
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Antioxidantes , Asma/epidemiologia , Dieta , Hipersensibilidade/epidemiologia , Criança , Estudos Transversais , Feminino , Grécia , Humanos , Masculino , Prevalência , Inquéritos e QuestionáriosRESUMO
In humans, microbial colonisation of the intestine begins just after birth. However, development of the normal flora is a gradual process, which is initially determined by factors such as genetic aspects, the maternal-foetal interaction, place and mode of delivery, early feedings strategies, and the use of antibiotics. Current knowledge on the significance and impact of the gut microflora on the development of the gut immune system indicates that a close relationship between allergic sensitisation and the development of the intestinal microflora may occur in infancy. Intestinal micro-organisms could downregulate the allergic inflammation by counterbalancing type 2 T-helper cell responses and by enhancing allergen exclusion through an immunological response.
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Hipersensibilidade Alimentar/imunologia , Hipersensibilidade Alimentar/microbiologia , Intestinos/imunologia , Microbiota/imunologia , Células Th2/imunologia , Animais , Citocinas/imunologia , Humanos , Imunidade nas Mucosas , Imunomodulação , Recém-Nascido , Equilíbrio Th1-Th2RESUMO
BACKGROUND: To provide a summary of the existing published knowledge on the association between sedentary lifestyle and childhood asthma. Twelve years ago, the first longitudinal studies carried out in children showed a relationship between physical activity and asthma. Several epidemiological studies confirmed these findings, with sedentary lifestyle predicting the onset of asthma. METHODS: A systematic review of epidemiological studies was conducted within the MEDLINE database. Epidemiological studies on children subjects, published in English were included in the review. A comprehensive literature search yielded 50 studies for further consideration. Following the application of the eligibility criteria, we identified 11 studies. RESULTS: A positive association and an excess risk of asthma during childhood were revealed to sedentary lifestyle. The findings proved the association between childhood asthma and sedentary lifestyle. The correlation between bronchial asthma and sedentary life during childhood and identifying whether preventable or treatable risk factors exist needs to be determined. Further research on the topic is essential for safer and standardised conclusions. CONCLUSIONS AND PRACTICE IMPLICATION: Asthma can be controlled when managed properly. The role of the nurse as an educator should establish and maintain a relationship with patients in order to help them manage their disease. The steps towards asthma management will help paediatric patients to guide their approach to the condition.
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Asma/epidemiologia , Cuidados de Enfermagem , Comportamento Sedentário , Animais , Asma/enfermagem , Criança , Ensaios Clínicos como Assunto , Humanos , Educação de Pacientes como Assunto , RiscoRESUMO
BACKGROUND: There is epidemiological evidence that Mediterranean diet exposure is associated with lower asthma prevalence in children. We aimed to summarize the available data and to know whether the Mediterranean setting modifies this association. METHODS: The literature search, up to May 2012, was on epidemiological studies in the general population of children assessing whether adherence to Mediterranean diet (measured as a score) was associated with the prevalence of 'current wheeze'; 'current severe wheeze'; or 'asthma ever'. Odds ratios (OR) of the eight included studies compared the highest tertile of the score with the lowest. Random-effects meta-analyses for the whole group of studies and stratified by Mediterranean setting (centers <100 Km from the Mediterranean coast) were performed. Differences between strata were assessed using the Q test. RESULTS: For 'current wheeze', there was a negative significant association with the highest tertile of Mediterranean diet score (OR 0.85, 95% CI 0.75-0.98; p = 0.02), driven by Mediterranean centers (0.79, 0.66-0.94, p = 0.009), although the difference with the non-Mediterranean centers (0.91, 0.78-1.05, p = 0.18) was not significant. The results for 'current severe wheeze' were as follows: 0.82, 0.55-1.22, p = 0.330 (all); 0.66, 0.48-0.90, p = 0.008 (Mediterranean); and 0.99, 0.79-1.25, p = 0.95 (non-Mediterranean); with the difference between regions being significant. For 'asthma ever', the associations were as follows: 0.86, 0.78-0.95, p = 0.004 (all); 0.86, 0.74-1.01, p = 0.06 (Mediterranean); 0.86, 0.75-0.98; p = 0.027 (non-Mediterranean); with the difference between regions being negligible. CONCLUSIONS: Adherence to the Mediterranean diet tended to be associated with lower occurrence of the three respiratory outcomes. For current and current severe wheeze, the association was mainly driven by the results in Mediterranean populations.
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Asma/epidemiologia , Dieta Mediterrânea/estatística & dados numéricos , Animais , Asma/complicações , Criança , Humanos , Prevalência , Sons Respiratórios/etiologia , EspanhaRESUMO
Food allergy can be considered a failure in the induction of oral tolerance. Recently, great interest has been focused on understanding the mechanisms and the contributing factors of oral tolerance development, hoping for new definitive interventions in the prevention and treatment of food allergy. Given that food processing may modify the properties and the nature of dietary proteins, several food processing methods could affect the allergenicity of these proteins and consequently may favour oral tolerance induction to food allergic children. Indeed, effective thermal food processing regimens of altering food proteins to reduce allergenicity have been recently reported in the literature. This article is mainly focused on the effect of selective thermal processing regimens on the main infant allergenic foods, with a potential clinical relevance on their allergenicity and therefore on oral tolerance induction. In the light of recent findings, the acquisition of tolerance in younger age and consequently the ability of young children to "outgrow" food allergy could be achieved through the application of selective thermal processing regimens on certain allergenic foods. Therefore, the ability of processed foods to circumvent clinical disease and at the same time to have an impact on the immune system and facilitate tolerance induction could be invaluable as a component of a successful therapeutic strategy. The opening in the new avenues of research in the use of processed foods in clinical practice for the amelioration of the impact on the quality of life of patients and possibly in food allergy prevention is warranted.
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Alérgenos/química , Culinária , Hipersensibilidade Alimentar/imunologia , Tolerância Imunológica , Boca/imunologia , Alérgenos/imunologia , Animais , Alimentos/efeitos adversos , Hipersensibilidade Alimentar/prevenção & controle , Temperatura Alta , Humanos , Lactente , Qualidade de VidaRESUMO
Conventional rodent models of respiratory allergy that employ intraperitoneal sensitization to aeroallergen plus adjuvant, have offered greatly to our current knowledge of the pathophysiology of allergic airway diseases. Notwithstanding this significant contribution, non-adjuvant aided sensitization via respiratory presentation of the allergen, is more naturally relevant and more closely mimics the human exposure. Nevertheless, in the experimental setting, primary respiratory exposure to inert antigen is likely to lead to inhalation tolerance. Inasmuch as divergent and discrepant results are often reported in experimental models employing this method of sensitization, we set out to review the relative literature and identify and discuss factors that are liable to interfere in such protocols and modify the immune response, hence leading to variable outcomes. Protocol design features (including the use of anaesthesia, the nature and dosage of the antigen and the strain/age/sex and handling of the animals) as well as environmental factors (including airborne substances, viruses and lipopolysaccharide) have been identified as key modulators of the immune response that evolves, following primary airway exposure of laboratory rodents to aeroallergen. Delineation of the effect of those factors to induction or abrogation of inhalation tolerance can have important implications in the design of both improved experimental protocols of respiratory allergy and methods to intercept sensitization to inert aeroallergens in the clinical field.
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Alérgenos/imunologia , Antígenos/imunologia , Modelos Animais de Doenças , Tolerância Imunológica , Camundongos , Ratos , Hipersensibilidade Respiratória/imunologia , Alérgenos/administração & dosagem , Animais , Animais de Laboratório , Antígenos/administração & dosagem , Meio Ambiente , Feminino , Fatores Imunológicos/imunologia , MasculinoRESUMO
OBJECTIVES: Increased meal frequency and daily breakfast consumption have been inversely associated with childhood obesity. The purpose of the study was to examine the possible interaction effect between meal frequency and breakfast consumption on childhood obesity. METHODS: Seven hundred children (323 boys) aged 10-12 years were enrolled in this cross-sectional study. Several lifestyle, dietary and physical activity characteristics were recorded with food frequency and physical activity questionnaires. Body height and weight were measured and body mass index was calculated in order to classify children as overweight or obese (International Obesity Task Force classification). Multiple logistic regression analysis was used in order to evaluate the interaction between daily breakfast intake and more than three meals per day consumption with overweight or obesity. RESULTS: Of the children, 27.6% and 9.0% were overweight and obese, respectively. Moreover, 60.2% consumed three or more meals per day and 62.7% consumed breakfast in a regular daily basis. Children who consumed more than three meals per day and also consumed breakfast daily, were two times less likely to be overweight or obese (adjusted odds ratio: 0.49, 95% confidence interval: 0.27-0.88). CONCLUSION: A combined higher meal frequency and daily breakfast consumption dietary pattern may prevent overweight and obesity in children.
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Comportamento Alimentar , Comportamentos Relacionados com a Saúde , Obesidade/epidemiologia , Sobrepeso/epidemiologia , Criança , Exercício Físico/fisiologia , Feminino , Inquéritos Epidemiológicos , Humanos , Masculino , Inquéritos Nutricionais , Inquéritos e QuestionáriosAssuntos
Aleitamento Materno , Hipersensibilidade a Leite/diagnóstico , Hipersensibilidade a Leite/fisiopatologia , Proctocolite , Trombocitose , Animais , Aleitamento Materno/efeitos adversos , Bovinos , Pré-Escolar , Comportamento Alimentar , Feminino , Humanos , Hipersensibilidade Tardia , Lactente , Masculino , Leite/efeitos adversos , Hipersensibilidade a Leite/dietoterapia , Hipersensibilidade a Leite/imunologia , MãesRESUMO
BACKGROUND: Variability in the prevalence of allergic diseases has been detected not only between different countries, but also between cities with similar national and different socio-economic or climatic characteristics. The aim of this study was to determine the prevalence of childhood asthma and allergies and which factors are associated with them, in the two largest Greek cities, Athens and Thessaloniki. METHODS: Two thousand and twenty-three Greek 9-10-year-old schoolchildren from Athens (Central Greece) and Thessaloniki (North Greece, more humid), were included in ISAAC-II study. All participants followed the ISAAC-II protocol by questionnaire, skin prick testing and flexural dermatitis examination. RESULTS: Compared with Athens, the prevalence of current wheezing (8.4% vs. 5.7%, p=0.002), lifetime asthma (11.5% vs. 7.7%, p=0.004), atopic current asthma (3.2% vs. 1.6%, p=0.02), allergic rhinitis (8.2% vs. 5.2%, p=0.007), and hay fever (21.7% vs. 12.5%, p<0.001) were higher in Thessaloniki. The overall sensitisation rate was also higher in Thessaloniki than in Athens (25.2% vs. 16%, p<0.001) with more prevalent sensitising due to the perennial allergens (D. pteronyssinus, D. farinae, Alternaria tenuis) and cat dander. Perennial allergens sensitisation was a risk factor for current asthma in both cities. CONCLUSION: A higher prevalence of asthma symptoms, allergic rhinitis, and sensitisation rate was detected in Greek schoolchildren living in Thessaloniki compared to those in Athens. Allergy to mites and mould was more prevalent in Thessaloniki. The more humid weather of Thessaloniki may be implicated.
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Inquéritos Epidemiológicos , Hipersensibilidade/epidemiologia , População Urbana , Animais , Antígenos de Dermatophagoides/efeitos adversos , Asma , Gatos , Criança , Cidades , Feminino , Grécia , Humanos , Hipersensibilidade/diagnóstico , Hipersensibilidade/fisiopatologia , Masculino , Prevalência , Pyroglyphidae , Sons Respiratórios , Testes Cutâneos , Inquéritos e QuestionáriosRESUMO
We investigated the short-term effects of particulate matter with aerodynamic diameter <10 µg/m(3) (PM(10)), sulfur dioxide (SO(2)), nitrogen dioxide (NO(2)) and ozone (O(3)) on pediatric asthma emergency admissions in Athens, Greece over the period 2001-2004. We explored effect modification patterns by season, sex, age and by the presence of desert dust transported mainly from the Sahara area. We used daily time-series data provided by the children's hospitals and the fixed monitoring stations. The associations were investigated using Poisson regression models controlling for seasonality, weather, influenza episodes, day of the week and holiday effects. A 10 µg/m(3) increase in PM(10) was associated with a 2.54% increase (95% confidence interval (CI): 0.06%, 5.08%) in the number of pediatric asthma hospital admissions, while the same increase in SO(2) was associated with a 5.98% (95% CI: 0.88%, 11.33%) increase. O(3) was associated with a statistically significant increase in asthma admissions among older children in the summer. Our findings provide limited evidence of an association between NO(2) exposure and asthma exacerbation. Statistically significant PM(10) effects were higher during winter and during desert dust days, while SO(2) effects occurred mainly during spring. Our study confirms previously reported PM(10) effects on emergency hospital admissions for pediatric asthma and further provides evidence of stronger effects during desert dust days. We additionally report severe effects of SO(2), even at today's low concentration levels.
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Poluentes Atmosféricos/intoxicação , Asma/induzido quimicamente , Dióxido de Nitrogênio/intoxicação , Ozônio/intoxicação , Material Particulado/intoxicação , Dióxido de Enxofre/intoxicação , Adolescente , Asma/epidemiologia , Criança , Pré-Escolar , Poeira , Feminino , Grécia/epidemiologia , Hospitalização , Humanos , Lactente , Masculino , Análise de Regressão , Estações do Ano , Tempo (Meteorologia)RESUMO
AIM: Childhood obesity has become a modern epidemic with escalating rates. The aim of our study was the assessment of the association between extracurricular sports participation with the obesity status among Greek schoolchildren aged 10-12 years. METHODS: Seven-hundred children (323 boys) aged 10-12 years were evaluated through a standardized questionnaire. Several lifestyle, dietary and physical activity attributes were recorded. Children according to the median hours of participation in after-school structured physical activity were classified as participating for more or less than 3 hours per week. Body height and mass were measured and body mass index was calculated in order to classify children as overweight or obese according to IOTF classification. Multiple logistic regression analysis was used in order to evaluate the association between the participation of more than 3 hours per week in structured physical activity after school with overweight or obesity. RESULTS: A total of 48.9% of the boys and 31.8% of the girls were participating for more than 3 hours per week (P<0.001) in extracurricular sport activities. Moreover, 33.9 % of the boys and 22.1 % of the girls were classified as overweight and 9.4% of the boys and 8.6% of the girls as obese (P=0.006). Girls who participated in excess of 3 hours in extracurricular sport activities were 59% less likely to be overweight or obese than their non participating counterparts, adjusted for several confounders (adjusted OR: 0.41, 95% CI: 0.20-0.83). CONCLUSION: Participation in extracurricular sports activity is inversely related to overweight or obesity in 10-12 years old Greek girls.
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Obesidade , Esportes , Criança , Dieta , Feminino , Grécia , Humanos , Estilo de Vida , Masculino , Análise de Regressão , Inquéritos e QuestionáriosRESUMO
The stress system co-ordinates the adaptive responses of the organism to stressors of any kind. Inappropriate responsiveness may account for increased susceptibility to a variety of disorders, including asthma. Accumulated evidence from animal models suggests that exogenously applied stress enhances airway reactivity and increases allergen-induced airway inflammation. This is in agreement with the clinical observation that stressful life events increase the risk of a new asthma attack. Activation of the hypothalamic-pituitary-adrenal (HPA) axis by specific cytokines increases the release of cortisol, which in turn feeds back and suppresses the immune reaction. Data from animal models suggest that inability to increase glucocorticoid production in response to stress is associated with increased airway inflammation with mechanical dysfunction of the lungs. Recently, a growing body of evidence shows that asthmatic subjects who are not treated with inhaled corticosteroids (ICS) are likely to have an attenuated activity and/or responsiveness of their HPA axis. In line with this concept, most asthmatic children demonstrate improved HPA axis responsiveness on conventional doses of ICS, as their airway inflammation subsides. Few patients may experience further deterioration of adrenal function, a phenomenon which may be genetically determined.
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Asma/etiologia , Estresse Fisiológico , Corticosteroides/uso terapêutico , Animais , Asma/tratamento farmacológico , Asma/patologia , Criança , Humanos , Sistema Hipotálamo-Hipofisário , Inflamação , Sistema Hipófise-SuprarrenalRESUMO
We describe 10 children who developed lung cavitation during the treatment of bacteremic pneumococcal lobar pneumonia. Chest CT scan showed extensive consolidation with several small lucencies and air-filled cavities. Invasive procedures like aggressive pleural intervention were not needed and the children recovered attaining normal lung function on long-term follow-up.
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Bacteriemia/diagnóstico , Pulmão/diagnóstico por imagem , Pneumonia Pneumocócica/diagnóstico por imagem , Streptococcus pneumoniae/isolamento & purificação , Adolescente , Antibacterianos/uso terapêutico , Bacteriemia/complicações , Bacteriemia/tratamento farmacológico , Criança , Pré-Escolar , Empiema/diagnóstico , Humanos , Imunocompetência , Lactente , Pulmão/patologia , Pulmão/fisiopatologia , Pneumonia Pneumocócica/complicações , Pneumonia Pneumocócica/tratamento farmacológico , Sorotipagem , Streptococcus pneumoniae/efeitos dos fármacos , Tomografia Computadorizada por Raios X , Resultado do TratamentoRESUMO
We determined the prevalence of overweight and obesity in young Greek men in 2006 and examined variations related to their place of residence and educational level. Body height and weight were measured in 2568 conscripts of the Greek army, aged 19-26 years. The calculated body mass index (BMI, kg m(-2)) was correlated to their socio-demographic characteristics, i.e. level of education and place of residence (urban or rural). Overweight and obesity were defined according to the World Health Organization classification. Mean BMI (standard deviation) of the conscripts was 24.7 (4.2). The prevalence of overweight (30 > BMI > or = 25 kg m(-2)) was 28.5% and correlated positively with a higher educational level, whereas the prevalence of obesity (BMI > or = 30 kg m(-2)) was 10.4% and correlated positively with a lower educational level. Our data were compared with those of similar studies performed in the years 1969: BMI 23.8 (1.4) (P < 0.0001) and 1990: BMI 23.8 (2.9) (P < 0.0001), showing a positive secular trend for BMI in Greek conscripts in the last 16 years. In conclusion, we documented an alarmingly high prevalence of overweight and obesity among young Greek men.