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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