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. Author manuscript; available in PMC: 2009 Feb 21.
Published in final edited form as: Gastroenterology. 2007 May 21;133(2):433–444. doi: 10.1053/j.gastro.2007.05.014

Table 2.

Pre- and Post Treatment Means and SDs for Patients Receiving CBT, PE, and WL

CBT
 PE
 WL
Variable Mean (+/− SD) Baseline Week 12 Baseline Week 12 Baseline Week 12
IBS-QOL (Total) 59.08 (20.67) 73.98 (16.53) 57.03 (21.01) 67.72 (21.81) 60.47 20.31) 63.97(22.59)
Global Severity Index (GSI) 57.05 (9.76) 53.22 (9.85) 56.17 (9.77) 55.50 (10.63) 57.41 (8.05) 56.20 (9.43)
Global Improvement (unit change) -------------- 52.61 (33.67) --------------- 25.39 (36.37) -------------- 16.95 (37.18)
IBS Symptom Severity (MD rating) 3.18 (0.86) ---------------- 3.08 (0.90) ---------------- 3.38 (0.69) --------------

Note. IBS-QOL indicates IBS Quality of Life measure. GSI measures global severity of psychological distress