Intervention effectiveness: height, weight and BMI at follow-up among 1108 primary school students in Nanjing City, China^.

^The intervention lasted for two semesters from September 2010 to June 2011† calculated from mean values at follow-up (intervention–control).‡ calculated from BMI values at study end (follow-up–baseline); the intervention group had more BMI deduction than the control, which was marginally significant.Intervention effectiveness: height, weight and BMI at follow-up among 1108 primary school students in Nanjing City, China^.