Skip to main content

Table 3 Group difference in prevalence of weight status at T4

From: Parental support in promoting children’s health behaviours and preventing overweight and obesity – a long-term follow-up of the cluster-randomised healthy school start study II trial

  T1 T4   
  Intervention (I1) n = 178 Control (C1) n = 181 Intervention (I4) n = 96 Control (C4)n = 113 Difference T1-T4  
Weight statusa (%) n % n % n % n % DD = (I 4 -I 1 )-(C 4 -C 1 ) p
Underweight 11 6.2 11 6.1 6 6.3 6 5.3 0.9 0.99
Normal weight 121 67.7 122 67.4 52 54.2 72 63.7 −9,8 0.06
Overweight 30 16.9 25 13.8 26 27.1 24 21.2 2.8 0.71
Obesity 16 9.0 23 12.7 12 12.5 11 9.7 6.5 0.12
  1. Results of independent samples t-test
  2. DD difference in difference
  3. p = between intervention and control groups
  4. Subjects are dependent observations between T1 and T4 with valid measurements at T2
  5. aDefined according to Cole et al. [21]