Cost-effectiveness ratio (CER) by city in the nutrition & PA combined intervention group.

<p>^a For BMI, BAZ and overweight & obesity prevalence, the ‘effect’ means BMI, BAZ and overweight & obesity prevalence reduction (post intervention vs before intervention) in intervention group compared with that of in the control group, respectively. ^b ALL CER was presented in US dollars. ^c O & B means overweight & obesity. ^d Total’ means the average effect of four intervention centers (Jinan, Guangzhou, Harbin, Shanghai), Chongqing was excluded here because the intervention in this city was not effective (p>0.05). </p

Characteristics of the subjects at baseline by group.

<p>^a^b: Percentage shared the different letter means significant difference at baseline among groups in Beijing, p<0.05. ^* Significant difference (p<0.05) between control and Nutrition & PA intervention group. ^c statistical analysis and compare between intervention group with it’s control group. No superscript means no significant difference among groups.</p

The costs of development and evaluation of the program (RMB (US dollars)^<b>*</b>).

*<p>US dollars was calculated by Jan, 2010 exchange rate (6.8).</p

Anthropometric characteristics and obesity prevalence at baseline, after intervention and changes in different groups<b>^</b>.

<p>^{^} Continuous variables were expressed as mean±standard error.</p><p>^{a, b}: Means shared the different letter means significant difference at baseline among groups in Beijing, p<0.05. </p><p>^{c, d} : Means shared the different letter means significant difference of changes (post-intervention vs. baseline) among groups in Beijing, p<0.05.</p><p>^* Comparison the mean between post-intervention and baseline in each group, p< 0.05.</p><p>^# Comparison means between combined intervention group and control group at baseline as well as for changes (post-intervention vs. baseline), ^# p<0.05; ^## p<0.01.</p><p>^† OR and 95% CI for overweight & obesity prevalence using generalized linear mixed model, no significantly difference of OR between nutrition or PA individual intervention group with their control group, but a borderline difference between combined intervention group with its’ control group (p=0.06). </p