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Table 2 Descriptive statistics of means, SDs and effect sizes (Cohen’s d ) for measures of depression, anxiety and quality of life

From: Choosing between Internet-based psychodynamic versus cognitive behavioral therapy for depression: a pilot preference study

   Mean (SD) Effect size d(95% CI)
Outcome measure Group Pre ctrl Post ctrl/Pre tx Post tx 7-month follow-up Between-group, Post tx Between-group, 7mo Within-group, Pre tx – Post tx Within-group, Post tx - 7mo
BDI-II          
  ICBT 26.10 (6.7) 19.57 (8.0) 12.26 (6.6) 10.36 (10.6) 0.33 (−0.42 – 1.07) 0.45 (−0.23 – 1.14) 1.04 (0.61 – 1.48) 0.20 (−0.10 – 0.50)
  IPDT 26.29 (6.8) 22.29 (7.4) 14.60 (8.5) 15.42 (12.6)    1.06 (0.45 – 1.67) −0.13 (−0.69 – 0.43)
MADRS-S          
  ICBT 24.17 (4.6) 18.30 (6.8) 12.78 (7.8) 11.11 (8.2) 0.28 (−0.46 – 1.03) 0.32 (−0.36 – 1.00) 0.88 (0.43 – 1.34) 0.18 (−0.13 – 0.49)
  IPDT 22.64 (5.9) 19.93 (5.4) 14.90 (6.7) 13.75 (8.4)    0.90 (0.21 – 1.58) 0.00 (−0.44 – 0.44)
PHQ-9          
  ICBT 13.03 (4.0) 10.63 (5.1) 6.17 (5.1) 5.75 (6.0) 0.11 (−0.63 – 0.85) 0.36 (−0.32 – 1.04) 1.02 (0.46 – 1.57) 0.19 (−0.12 – 0.50)
  IPDT 14.14 (5.1) 11.93 (3.9) 6.70 (4.3) 7.92 (6.4)    1.08 (0.65 – 1.51) −0.21 (−0.56 – 0.15)
GAD-7          
  ICBT 8.60 (3.8) 7.33 (4.8) 5.09 (4.3) 3.71 (4.9) 0.14 (−0.61 – 0.88) 0.70 (0.00 – 1.39) 0.56 (0.15 – 0.97) 0.27 (0.01 – 0.53)
  IPDT 7.57 (4.7) 8.71 (5.2) 5.70 (4.9) 7.08 (4.8)    0.63 (−0.05 – 1.31) −0.45 (−1.07 – 0.17)
BAI          
  ICBT 19.13 (10.0) 12.67 (8.6) 9.43 (8.1) 7.93 (9.9) 0.22 (−0.53 – 0.96) 0.38 (−0.30 – 1.06) 0.39 (0.04 – 0.75) 0.09 (−0.24 – 0.42)
  IPDT 18.07 (9.7) 15.29 (9.9) 11.10 (6.6) 11.83 (11.0)    0.61 (−0.13 – 1.35) −0.23 (−0.74 – 0.28)
QOLI          
  ICBT −0.07 (1.1) 0.15 (1.5) 0.58 (1.6) 1.49 (1.7) 0.32 (−0.43 – 1.07) 0.67 (−0.02 – 1.36) 0.45 (0.06 – 0.83) 0.45 (0.13 – 0.78)
  IPDT −0.19 (1.6) 0.33 (1.4) 0.09 (1.2) 0.46 (1.1)    0.22 (−0.14 – 0.57) −0.20 (−0.56 – 0.16)
  1. Note: Pre ctrl = Time point before original trial started; Post ctrl/Pre tx = Time point at the end of the original trial period which also served as pre-treatment assessment in this study; Post tx = Time point at the end of the treatment period; BDI-II = Beck Depression Inventory-II; MADRS-S = Montgomery Åsberg Depression Rating Scale - Self Rated; PHQ-9 = 9-item Patient Health Questionnaire Depression Scale; GAD-7 = 7-item Patient Health Questionnaire Generalized Anxiety Disorder Scale; BAI = Beck Anxiety Inventory; QOLI = Quality of Life Inventory; ICBT = Internet-based cognitive-behavioral therapy; IPDT = Internet-based psychodynamic therapy.