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Table 2 Anthropometric changes from baseline to follow-up in the intervention group and school-based control group

From: Evaluation of a school-based multicomponent behavioural intervention in deprived urban areas for children classified as overweight, obese or at risk for overweight

  Intervention group (N = 195) School-based control group (N = 166) p-valuea
Mean (SD) difference or N (%) Mean (SD) difference or N (%)
Change in BMI (kg/m2) 0.10 (0.88) 0.69 (1.40)  < 0.01
Change in BMI SDS − 0.13 (0.22) − 0.06 (0.26) 0.02
BMI SDS reduction 0.08
 None Δ BMI-SDS > 0 60 (31) 72 (43)  
 Minimal Δ BMI-SDS ≤ 0 ≤ − 0.25 84 (43) 63 (38)  
 Successful Δ BMI-SDS ≤ − 0.25 ≤ − 0.5 38 (19) 22 (13)  
 Highly successful Δ BMI-SDS ≤ − 0.50 13 (7) 9 (5)  
  1. Follow-up measurement intervention group at the end of the program; follow-up measurement school-based control group in the next school year
  2. aUnpaired t-test or chi-squared test