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Table 2 Unadjusted and adjusted outcome parameters at the end of the intervention period

From: Is bouldering-psychotherapy a cost-effective way to treat depression when compared to group cognitive behavioral therapy – results from a randomized controlled trial

 

Mean unadjusted, imputed values with SD

Mean adjusted, imputed values with 95%-CI

BPT (n = 79)

CBT (n = 77)

BPT (n = 79)

CBT (n = 77)

AMD

Effect parameter

 MADRS

15.4 (9.1)

18.1 (10.4)

15.8 [13.5; 18.1]

18.4 [16.1; 20.8]

-2.58 [−5.52; 0.25]

 PHQ-9

9.0 (5.5)

10.4 (6.0)

9.4 [8.0; 10.7]

10.7 [9.3; 12.1]

-1.35 [−2.97; 0.40]

Cost parameter in €

 Total costs

4624 (4793)

4199 (4395)

6019 [4255; 8629]

5266 [3684; 7972]

754 [− 1280; 2737]

 Indirect costs

3726 (4705)

3418 (4396)

3410 [2493;4386]

4154 [3034; 5340]

− 744; [− 2247;660]

 Direct costs

640 (563)

548 (591)

769 [581;1017]

510 [381;544]

259 [−3;544]

 Intervention cost

257 (95)

233 (86)

   
  1. Adjustment for baseline value, sex, depression severity, study site and wave
  2. Effect estimates based on Generalized Linear Model with Gaussian-distribution,
  3. Cost estimates for total and direct costs based on one-part gamma-distributed model, cost estimates for indirect costs based on two-part model with gamma distributed Generalized Linear Model as second part
  4. Cost for inpatient treatment are included in the adjustment variables baseline direct costs and baseline total costs but did per definition not incur during the study period, hence adjusted costs deviate substantially from unadjusted costs
  5. AMD Adjusted mean difference, CI Confidence interval, M Mean, MADRS Montgomery-Asberg Depression Rating Scale, PHQ-9 = Patient Health Questionnaire, SD Standard deviation