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. Author manuscript; available in PMC: 2009 Aug 1.
Published in final edited form as: Clin Gastroenterol Hepatol. 2008 Jun 4;6(8):899–906. doi: 10.1016/j.cgh.2008.03.004

Table 1.

Sample baseline characteristics for total sample and by treatment group.

Treatment Group
Total Sample (N = 75) MC-CBT (n = 25) S-CBT (n = 23) Wait List (n = 27)
Age (mean, sd) 46.6 (16.7) 41.9 (13.6) 48.13 (18.2) 49.7 (17.6)
Gender (%)
 Male 13.3% 24.0% 8.7% 7.4%
 Female 86.7% 76.0% 91.3% 92.6%
Marital Status (%)
 Single 24.0% 24.0% 30.4% 18.5%
 Married 45.3% 48.0% 39.1% 48.1%
 Divorced 22.7% 24.0% 17.4% 25.9%
 Widowed/separated 2.7% 0.0% 4.3% 3.7%
 Living w/ partner 5.3% 4.0% 8.7% 3.7%
Ethnicity (%)
 Asian 1.3% 4.0% 0.0% 0.0%
 African American 2.7% 4.0% 0.0% 3.7%
 White 94.7% 92.0% 100% 92.6%
 Hispanic 1.3% 0.0% 0.0% 3.7%
Education
 Some High School 2.7% 0.0% 8.7% 0.0%
 High School Grad/GED 8.0% 8.0% 8.7% 7.4%
 Some College 17.3% 16.0% 13.0% 22.2%
 Vo-Tech/Associate’s 17.3% 28.0% 8.7% 14.8%
 College Grad 18.7% 16.0% 30.4% 11.1%
 Some Post-Grad 8.0% 0.0% 4.3% 18.5%
 Master’s Degree 21.3% 16.0% 21.7% 25.9%
 Doctoral Degree 6.7% 16.0% 4.3% 0.0%
Years with IBS (mean, sd) 16.5 (15.3) 12.00 (12.1) 16.2 (12.2) 20.9 (19.2)
Bowel habit (%)
 Diarrhea 53.3% 48.0% 60.9% 51.9%
 Constipation 25.3% 32.0% 21.7% 22.2%
 Mixed 21.3% 20.0% 17.4% 25.9%
IBS-SSS 294.0 (79.4) 312.4 (81.2) 282.9 (77.3) 286.6 (79.5)

Note. IBS-SSS Categories: Mild = 75–175; Moderate = 175–300; Severe = > 300.