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Table 4 Cost-effectiveness analysis and sensitivity analysis with anxiety and depressive symptoms as health outcomes

From: Towards sustainable mental health promotion: trial-based health-economic evaluation of a positive psychology intervention versus usual care

  Total sample Alternative scenarios
    A B C
  Anxiety Depression Anxiety Depression Anxiety Depression Anxiety Depression
Costs, €a 239 239 196 196 617 617 223 223
Effect 0.22 0.21 0.22 0.21 0.22 0.21 0.26 0.23
ICER, €b 1095 1189 883 940 2785 2897 904 968
Distribution on the cost-effectiveness plane       
1st quadrant (northeast) 91 90 86 86 100 100 89 89
2nd quadrant (inferior: northwest) 0 0 0 0 0 0 0 0
3rd quadrant (southwest) 0 0 0 0 0 0 0 0
4th quadrant (dominant: southeast) 9 10 14 14 0 0 11 11
WTP ceiling, %         
€ 0 13 13 18 18 4 4 15 15
€ 10,000 92 93 93 93 91 90 92 92
€ 20,000 97 97 97 97 97 96 97 97
€ 30,000 100 100 100 100 100 100 100 100
  1. Scenario A = adjustment of the per participant intervention costs, based on actual costs for counseling (the number of extensive emails sent by each participant multiplied by €17); scenario B = intervention costs raised from €222 to €600; scenario C = completers only analysis (n = 112 intervention group and n = 125 control group)
  2. aCosts per ‘disease-free’ year (i.e. one year reliable improvement in depressive symptoms) at 2014 prices
  3. bBootstrapped median, which is the 50th percentile of 2500 replications of the ICER