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Table 3 Imputed and adjusted physical activity values in the intervention group and in the control group

From: Cost-effectiveness of physical activity intervention in children – results based on the Physical Activity and Nutrition in Children (PANIC) study

  Average of physical activity hours per child over two years Values used in economic analysisa (95 confidence intervals)
Intervention group
  Baseline 1369 h b  
  2-year follow-up 1477 h c  
  Change over 2 years 108.2 h 54.0 h (47.6 to 60.5 h)
Control group
  Baseline 1306 h d  
  2-year follow-up 1241 h e  
  Change over 2 years -65.5 − 32.8 h (-40.9 to − 24.2 h)
  Incremental effectiveness 173.7 h f 86.8 h (76.1 to 97.0 h)
  1. aLinear change in PA assumed, the trapezoidal rule applied, and change in PA divided by 2
  2. b13.16 h/w * 104 weeks =1368.64 hours,
  3. c14.2 h/w * 104 weeks=1476.80 hours,
  4. d12.56 h/w * 104 weeks =1306.24 hours,
  5. e11.93 h/w * 104 weeks=1240.72 hours,
  6. f108.16 – (-65.52) = 173.68 hours