Intervention effectiveness: changes in selected lifestyle behaviors among 1108 primary school students in Nanjing City, China†.

† Change in frequency was defined as participants whose physical activity frequencies increased and unhealthy food intake frequencies decreased at the follow-up.‡ for control group, N = 297; for intervention group, N = 360* Odds ratios were estimated with control group as the reference and using multivariate logistic regression methods with adjustment for clustering effect at school level, participants' age, gender, baseline body weight and parents' educational attainment.** Change in red meat, snacks and soft-drinks presented as reduced consumption frequency, while in vegetables as increased frequency.Intervention effectiveness: changes in selected lifestyle behaviors among 1108 primary school students in Nanjing City, China†.