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Table 3 Mean change in scores on outcome measures over six months

From: A pilot randomized controlled trial of a stepped care intervention package for depression in primary care in Nigeria

   Intervention Control Change in scores between baseline and six months Difference in means at 6 months intervention vs control
  Intracluster correlation coefficients (ICC) Baseline n = 165 6 months n = 137 Baseline n = 69 6 months n = 64 Intervention Control Unadjusted (95% CI) Adjusted *(95% CI)
Mean (SD) Mean (SD) Mean (SD) Mean (SD) Mean change (95% CI) Mean change (95% CI)
Depression (PHQ-9) 0.045 11.3 (3.5) 4.1 (4.4) 11.3 (3.9) 5.5 (5.2) −7.4 (−8.3 to –6.5) −5.9 (−7.4 to –4.4) −1.4 (−4.3 to 1.5) −1.4 (−2.6 to 1.2)
WHODAS 0.042 21.0 (7.0) 15.9 (5.4) 21.6 (6.4) 16.3 (6.9) −5.6 (−6.9 to 4.3) −5.5 (−7.3 to –3.7) −0.5 (− 4.6 to 3.7) −0.4 (−3.8 to 2.9)
WHOQOL 0.049 73.6 (13.5) 85.5 (12.9) 68.3 (13.6) 78.2 (11.5) 12.5 (9.7 to 15.4) 11.0 (7.7 to 14.3) 7.3 (2.8 to 11.9) 5.2 (−0.5 to 11.0)
  1. *Adjusted for baseline scores, age and sex.
  2. WHODAS- WHO disability assessment schedule. WHOQOL- WHO quality of life instrument. SD- standard deviation. CI- confidence interval.