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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