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Table 2 Mean Yale-Brown Obsessive-Compulsive Scale (YBOCS) baseline, endpoint, and change scores by treatment group

From: Computer-assisted cognitive behavior therapy for obsessive-compulsive disorder: a randomized trial on the impact of lay vs. professional coaching

Treatment arm Baseline mean (SD) Endpoint mean (SD) Change mean (SD) 95% confidence interval, change t p
No coaching (n = 28) 22.82 (3.68) 16.32 (6.97) 6.50 (5.72) 4.29, 8.72 6.014 .000
Lay coaching (n = 28) 22.71 (3.97) 15.61 (5.88) 7.1071 (6.12) 4.73, 9.48 6.147 .000
Therapist coaching (n = 31) 21.81 (4.05) 15.32 (7.04) 6.4839 (6.09) 4.25, 8.72 5.930 .000
Total (N = 87)       
  1. t and p are for within subject values.