Agreement between two cutoff points for physical activity and associated factors in young individuals

摘要: Objective:To analyze the agreement between two cutoff points for physical activity (300 and 420 minutes/week) associated factors in youth.Methods:The study enrolled 738 adolescents of Londrina city, Parana, Southern Brazil. The following variables were collected by a self report questionnaire: presence moderate to vigorous activity, gender, age, father mother education level, with whom adolescent lives, number siblings, perception, participation Physical Education classes, facilities available practice sedentary behavior. Prevalence criterions compared using McNemar test was analysed Kappa index. Multivariate analysis performed Poisson regression robust variance adjustment applied.Results:The prevalence significantly different: 22,3% 300 minutes/week 12,8% (p<0,05), but strong (k=0,82, p<0,001). education, perception behavior both analyzed criteria. Participation class only point.Conclusion:Caution is suggested regarding cutoffs use epidemiological studies, considering they can result differences its factors.