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Table 3 Effects at 8 months mid-way assessment of the HEIA study, for all and by gender

From: Changes in adolescents' intake of sugar-sweetened beverages and sedentary behaviour: Results at 8 month mid-way assessment of the HEIA study - a comprehensive, multi-component school-based randomized trial

  8 months mid-way assessment   8 months mid-way assessment
  Total sample   Girls   Boys  
  Control Intervention   Control Intervention   Control Intervention  
  Mean CI Mean CI p Mean CI Mean CI p Mean CI Mean CI p
  n = 840 n = 469   n = 416 n = 241   n = 424 n = 228  
SSB, dl/d
- week
1.1 (1.0,1.2) 1.0 (0.9,1.1) 0.19 0.9 (0.8,1.0) 0.8 (0.6,0.9) 0.23 1.4 (1.2,1.5) 1.3 (1.1,1.5) 0.52
Group × WS      0.80      0.30      0.71
Group × PE      0.81      0.92      0.76
- weekend 2.4 (2.3,2.5) 2.3 (2.1,2.4) 0.20 2.1 (2.0,2.3) 1.9 (1.7,2.1) 0.04 2.6 (2.5,2.8) 2.6 (2.4,2.9) 1.00
Group × WS      0.77      0.83      0.97
Group × PE      0.35      0.47      0.77
TV/DVD, hours/d
- week
1.6 (1.6,1.7) 1.5 (1.4,1.5) 0.002 1.6 (1.5,1.6) 1.3 (1.2,1.5) 0.001 1.7 (1.6,1.8) 1.6 (1.5,1.7) 0.20
Group × WS      0.05      0.36      0.03
Group × PE      0.26      0.83      0.26
- weekend 2.3 (2.3,2.4) 2.2 (2.1,2.3) 0.04 2.3 (2.2,2.3) 2.1 (1.9,2.2) 0.03 2.4 (2.3,2.5) 2.3 (2.2,2.5) 0.44
Group × WS      0.68      0.86      0.37
Group × PE      0.23      0.75      0.18
Computer/games, hours/d
- week
1.2 (1.1,1.2) 1.1 (1.0,1.2) 0.06 1.0 (1.0,1.1) 0.9 (0.8,0.9) 0.004 1.3 (1.2,1.4) 1.3 (1.2,1.4) 0.76
Group × WS      0.01      0.08      0.02
Group × PE      0.31      0.34      0.73
- weekend 1.6 (1.6,1.7) 1.5 (1.4,1.6) 0.003 1.4 (1.3,1.5) 1.1 (1.0,1.3) <.001 1.9 (1.8,1.9) 1.8 (1.7,1.9) 0.58
Group × WS      0.19      0.78      0.09
Group × PE      0.14      0.10      0.90
  1. SSB = Sugar-sweetened beverages, Group = intervention and control, WS = weight status, PE = parental educational level
  2. Analyses: Overall for all and by gender, one-way ANCOVA. Group × WS/group × PE: separate interaction analyses for weight status and for parental education, two-way ANCOVA
  3. Adjusted for pre-test behaviour
  4. n vary slightly