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Table 1 Results of the studies of exposure versus cognitive therapy in OCD, Y-BOCS total score

From: Efficacy of exposure versus cognitive therapy in anxiety disorders: systematic review and meta-analysis

Study Main OM Pre-treatment End of Treatment Longest follow up Longest follow up
   CT E CT E (weeks) CT E
Van Balkom 1998 Y-BOCS 25.0(6.6) 24.7 (7.7) 13.5 (9.7) 17.1 (8.4) 26 11.0 (7.5) 11.1 (7.1)
Van Oppen 1995 Y-BOCS 24.1 (5.5) 25.4 (7.0) 13.3 (8.5) 17.3 (8.3) NA NA NA
Cottraux 2001 Y-BOCS 28.6 (5.1) 28.5 (4.9) 12.5 (8.2) 12.1 (7.8) 52 13.6 (8.8) 17.4 (8.5)
McLean 2001 Y-BOCS 21.9 (5.8) 21.8 (4.6) 16.1 (6.7) 13.2 (7.2) 104 17.3 (8.4) 12.8 (7.2)
Whittal 2005 Y-BOCS 23.50 (4.3) 21.66 (5.9) 10.6 (7.1) 10.4 (7.6) 104 10.3 (6.2) 11.2 (8.8)
  1. Note. CT = Cognitive Therapy; E = Exposure; Y-BOCS = Yale-Brown Obsessive Compulsive Scale