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Table 4 Effects of the intervention on BMI sds at T2 and T3

From: Effectiveness of a universal parental support programme to promote health behaviours and prevent overweight and obesity in 6-year-old children in disadvantaged areas, the Healthy School Start Study II, a cluster-randomised controlled trial

   T2     T3   
  n b p 95 % CI Between school class variance σ 2u (s.e.) n b p 95 % CI Between school class variance σ 2u (s.e.)
BMI sdsa 332 −0.03 0.46 −0.1 to 0.1 0.00 (0.00) 318 0.013 0.79 −0.1 to 0.1 0.08 (0.04)
BMI sdsa in overweight/obeseb children at T1 84 −0.02 0.75 −0.2 to 0.1 0.02 (0.10) 82 0.02 0.85 −0.2 to 0.2 0.14 (0.02)
BMI sdsa in overweightb children at T1 47 0.12 0.23 −0.1 to 0.3 0.11 (0.02) 47 0.13 0.22 −0.1 to 0.3 0.13 (0.03)
BMI sdsa in obeseb children at T1 37 −0.21 0.03 −0.4 to -0.02 0.00 (0.00) 35 −0.05 0.79 −0.4 to 0.3 0.26 (0.06)
  1. Results of Mixed Linear Regression adjusted for sex, parental education and baseline value
  2. b = Regression coefficient (beta), p = between intervention and control groups, CI = 95 % confidence interval
  3. Subjects are dependent observations between T1 and T2 and between T1 and T3
  4. aDefined according to Karlberg et al. 2001
  5. bDefined according to Cole et al. 2012