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Table 6 PHQ-9. Data summaries at baseline, 3 and 6 months

From: Counselling versus low-intensity cognitive behavioural therapy for persistent sub-threshold and mild depression (CLICD): a pilot/feasibility randomised controlled trial

   All Randomised Group Between-group difference (Li-CBT – PCC)
PCC Li-CBT
Baseline      
  Mean (SD) 12.8 (5.2) 15.2 (4.0) 10.2 (5.2)  
3 months
  Mean (SD) 7.5 (5.7) 10.9 (7.1) 5.2 (3.3)  
  Change from baseline Estimate (95 % CI) −5.0 (−7.2, −2.7) −3.8 (−8.3, 0.8) −5.8 (−8.5, −3.0) 2.0 (−3.0, 7.0)
  Hedges' g Estimate (95 % CI) 0.97 (0.37, 1.57) 0.82 (−0.11, 1.76) 1.06 (0.20, 1.91) 0.40 (−0.62, 1.42)
  p-value p < 0.001 p = 0.092 p = 0.001 p = 0.401
6 months
  Mean (SD) 6.0 (5.7) 7.5 (6.0) 4.4 (5.1)  
  Change from baseline Estimate (95 % CI) −7.4 (−9.8, −5.1) −8.2 (−11.7, −4.7) −6.6 (−10.3, −3.0) −1.6 (−6.4, 3.2)
  Hedges' g Estimate (95 % CI) 1.25 (0.68, 1.82) 1.51 (0.65, 2.38) 1.09 (0.25, 1.93) −0.26 (−1.11, 0.58)
  p-value p < 0.001 p < 0.001 p = 0.002 p = 0.493
  1. Estimated changes from baseline at each follow-up visit, on original scale and as effect sizes (Hedge’s g) with 95 % confidence intervals and p-values from paired t-tests. Estimated between-group differences at each follow-up point with 95 % confidence intervals and p-values from two-sample t-tests of changes from baseline