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Table 5 Sensitivity analyses comparing 3 groups of the Active Plus intervention at the 12-month follow-up

From: Cost-effectiveness and cost-utility of a Web-based or print-delivered tailored intervention to promote physical activity among adults aged over fifty: an economic evaluation of the Active Plus intervention

  Control group Print-delivered intervention (PB & PE) Web-based intervention(WB & WE) ICERb CEAFdand probability highest NMB
  Costsa Effect Costsa Effect Costsa Effect   
PA (MET hours/week) 2760 (5301) -2.2 2384 (4483) 2.9 2789 (5992) 0.2 Print dominant Print at any threshold
Print: 96%
QALY-EQ-5D-3Lc 2739 (5293) 0.884 2365 (4427) 0.879 2800 (6054) 0.886 79196 (Print vs. C) < €65000 Print, > €65000 C
Print: 65%
  Control group Basic intervention (PB & WB) Environmental intervention (PE & WE) ICER b CEAF d and probability highest NMB
  Costs a Effect Costs a Effect Costs a Effect   
PA (MET hours/week) 2760 (5301) -2.2 2771 (5375) 1.9 2400 (5203) 1.2 503 (Environment vs. Basic) < €550 Environment, > €550 Basic
Basic: 68%
QALY-EQ-5D-3Lc 2739 (5293) 0.884 2754 (5381) 0.879 2415 (5206) 0.886 Environment dominant Environment at any threshold
Environment: 75%
  1. PB = printed basic intervention, PE = printed environmental intervention, WB = Web-based basic intervention, WE = Web-based environmental intervention, C = control group.
  2. aIn Euros; bcalculated according to the formula ICER = (Ci-Cc)/(Ui-Uc); cBased on the Dutch algorithm for the EuroQol (EQ-5D-3L) scores; dCost-effectiveness acceptability frontiers (CEAF); eProbability of highest net monetary benefit (NMB) based on WTP = €20,000.