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Table 5 Significant post-intervention Intervention sub-group interactions

From: Promoting healthy weight in primary school children through physical activity and nutrition education: a pragmatic evaluation of the CHANGE! randomised intervention study

  Body size Physical activity Food intake
  Waist circumference BMI BMI z-score LPA Breakfast
Interactions Β (95% CI) p Β (95% CI) p Β (95% CI) p Β (95% CI) p OR (95% CI) p
Intervention * sex (crude) 0.46 (−0.57, 1.49) 0.38 0.77 (0.31, 1.23) 0.001 0.34 (0.08, 0.59) 0.01 12.84 (0.18, 25.50) 0.04 1.18 (−0.50, 2.86) 0.76
Girls n/a - −0.39 (−0.81, 0.03) 0.07 −0.18 (−0.42, 0.06) 0.14 −1.05 (−18.10, 16.0) 0.92 n/a -
Boys n/a - 0.47 (0.03 ,0.91) 0.04 0.27 (0.02, 0.52) 0.04 10.25 (−6.31, 26.81) 0.22 n/a -
Intervention x weight status (crude) −1.38 (−2.70, -0.05) 0.04 0.10 (−0.51, 0.71) 0.75 −0.01 (−0.33, 0.32) 0.97 1.10 (−14.58, 16.78) 0.89 10.30 (9.30, 11.30) 0.06
NW −1.34 (−2.00, -0.72) <0.001 n/a - n/a - n/a - 0.67 (0.59, 1.94) 0.53
OWOB −2.82 (−4.06, -1.58) <0.001 n/a - n/a - n/a - 5.08 (2.73, 7.43) 0.17
Intervention * SES (crude) 0.44 (−0.65, 1.53) 0.42 −0.11 (−0.64, 0.42) 0.68 0.01 (−0.28, 0.30) 0.95 −1.49 (−15.07, 12.09) 0.82 7.69 (5.66, 9.72) 0.05
High SES n/a - n/a - n/a - n/a - 8.82 (6.47, 11.16) 0.07
Low SES n/a - n/a - n/a - n/a - 0.38 (−1.04, 1.80) 0.19
  1. Notes. Crude analyses (adjusted for interaction terms, group, baseline value of the outcome measure) of interaction terms to evaluate potential effect modification are shown. Where these were significant, adjusted analyses (i.e., interaction term included in adjusted multilevel models) were conducted with results for each effect modifier shown (e.g., for sex, girls’ and boys’ results are reported). Values in bold denote beta (95% CI) and significance values of outcomes with significant intervention effects (P<0.10).