TRENDS IN BODY-MASS INDEX AND PREVALENCE OF OBESITY IN SWEDISH MEN 1980-89

Study objective-To assess changes in the body mass index (BMI, weight (kg)/height2 (M2 ) and in the prevalence of obesity in Swedish men during the 1980s. Design-Data from two successive cross sectional surveys were used. Setting-The whole of Sweden. Participants-Subjects included in the analyses were 7055 men from a 1980-81 survey (response rate 83.4%) and 6081 men from a 1988-89 survey (response rate 79%). Men were aged 16-84 years and were a representative sample of Swedish males. Measurements and main results-The results were based on self reported weight and height obtained during interview. After adjustment for sociodemographic variables, a significant increase in the mean BMI of the entire population of men was found between 1980-81 and 1988-89 (0.23 k g/m2; p<0.001), with a particularly large increase in the 25-34 year age group (0.45 kg/M2; p<0.0001) Which corresponds to 1.4 kg for a man 180 cm tall). In manual workers this value was 0.25 k g/M2 (p<0.0005). This increase was also reflected by a significant relative increase in the prevalence of the combination of overweight and obesity (BMI >25 kg/M2) of about 19% (odds ratio=1.19, 95% confidence intervals: 1.09, 1.29). Conclusions-During the 1980s the mean BMI and the prevalence of overweight and obesity among adult Swedish men increased.