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Table 3 Anthropometry, HRQOL and proportion (%) of children in each weight status categorya for total sample

From: Changes in weight status, quality of life and behaviours of South Australian primary school children: results from the Obesity Prevention and Lifestyle (OPAL) community intervention program

  INT COMP Intervention effect (unadjusted models)
(marginal mean difference b)
Intervention effect (adjusted models)c
(marginal mean differenceb)
 
Y3 (Baseline) Y5 (Final) Y3 (Baseline) Y5 (Final) INT COMP INT vs COMP p value INT COMP INT vs COMP p value
n 1208 1010 1145 750 1208 1010 1145 750     
Anthropometry
 BMI (kg/m2) 18.54d 18.43e 18.29e 18.64e −0.17 (−0.47–0.13) 0.37 (−0.01–0.76) −0.54 (−1.03 - -0.05) 0.029** −0.12 (−0.40–0.17) 0.16 (−0.17–0.50) −0.28 (−0.72–0.16) 0.209
 BMI z-score 0.33g 0.40f 0.30e 0.46e 0.05 (− 0.05–0.16) 0.18** (0.04–0.31) − 0.12 (− 0.29–0.05) 0.151 0.05 (− 0.05–0.16) 0.14** (− 0.02–0.26) −0.08 (− 0.24–0.08) 0.306
HRQoL 0.80 0.79 0.82 0.77 −0.012 (− 0.029–0.004) −0.046** (− 0.071 – − 0.022) 0.034** (0.006–0.062) 0.016
  INT COMP Intervention effect (unadjusted models)
(odds ratio (95% CI)2)
Intervention effect (adjusted models)
(odds ratio (95% CI)2)
  Y3 (Baseline) Y5 (Final) Y3 (Baseline) Y5 (Final) INTh COMPi INT vs COMPj p value INTh COMPi INT vs COMPj p value
n 1202 983 1144 749 1202 983 1144 749     
Weight status categorya % % % %    
 Underweight 7.4 4.7 5.8 4.4 0.62** (0.43–0.91) 0.75 (0.48–1.18) 0.83 (0.46–1.48) 0.525 0.63** (0.43–0.91) 0.75 (0.48–1.17) 0.84 (0.47–1.52) 0.570
 Healthy weight 69.1 70.9 74.5 70.5 1.13 (0.92–1.37) 0.78 (0.61–1.00) 1.44 (1.05–1.98) 0.024** 1.11 (0.92–1.35) 0.85 (0.68–1.06) 1.31 (0.98–1.73) 0.069
 Overweight 18.1 18.7 15.8 17.9 0.99 (0.78–1.26) 1.25 (0.94–1.68) 0.79 (0.54–1.16) 0.226 1.01 (0.80–1.27) 1.16 (0.88–1.54) 0.87 (0.60–1.25) 0.451
 Obese 5.5 4.6 3.9 6.5 0.85 (0.56–1.27) 1.65** (1.03–2.64) 0.51** (0.28–0.95) 0.035** 0.81 (0.54–1.21) 1.61** (1.03–2.51) 0.51** (0.28–0.92) 0.026**
 Combined overweight/obese 23.5 23.3 19.8 24.4 0.94 (0.75–1.17) 1.41** (1.07–1.86) 0.67 (0.47–0.95) 0.025** 0.96 (0.78–1.18) 1.27 (1.00–1.62) 0.75 (0.54–1.04) 0.083
  1. Abbreviations INT Intervention communities, COMP Comparison communities, Y Year
  2. **p < 0.05 before Bonferroni adjustment. No comparisons were significantly different after sequential Bonferroni adjustment
  3. aInternational Obesity Taskforce cut-points [33, 34]; bMarginal mean difference for continuous measures and odds ratio form weight status categories; cModels were adjusted by age and ICSEA score, other than BMI z-score which was adjusted for ICSEA score only; dn = 2 missing; en = 1 missing; fn = 12 missing; gn = 6 missing; hOdds of weight status categories at final for intervention group, baseline is the reference group; iOdds of weight status categories at final for comparison group, baseline is the reference group; jOdds of weight status categories for INT8, COMP9 is the reference group
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