Table 1. Subject characteristics.
Values are presented as mean (standard deviation). F- and p-values are from one-way ANOVA between IBS (n=55) and controls.
| IBS (n=55) | IBS-C (n=15) | IBS-D (n=17) | IBS-A (n=19) | Controls (n=48) | F-value (p-value) | |
|---|---|---|---|---|---|---|
| Age | 32.2 (12.3) | 35.0 (13.4) | 32.0 (5.46) | 31.2 (10.9) | 31.1 (12.3) | 0.243 (0.62) |
| Anxiety¥ | 5.89 (3.50) | 6.67 (3.67) | 5.24 (2.68) | 5.21 (3.16) | 3.49 (2.38) | 16.5 (<0.0001) |
| Depression¥ | 2.98 (2.77) | 3.27 (2.40) | 3.06 (2.81) | 2.21 (2.15) | 0.80 (0.922) | 27.4 (<0.00001) |
| IBS severityǂ | 2.00 (0.544) | 2.07 (0.704) | 2.00 (0.612) | 1.95 (0.405) | ||
| IBS duration (years) | 11.1 (7.73) | 16.5 (9.78) | 9.06 (6.06) | 8.47 (5.98) |
ǂ
on a scale of 0 (None: no symptoms), to 4 (Very severe: markedly affects my lifestyle)
¥
depression and anxiety were measured on the HADS; possible scores for each of anxiety and depresssion range from 0 to 21
IBS-C, IBS-D, and IBS-A, constipation, diarrhea, and alternating, respectively.