Table 4. Demographic and behavioral variables.
Mean and standard deviation (SD) for healthy controls (HC) and irritable bowel syndrome (IBS) patients. Patient health questionnaire was score without gastrointestinal items.
| Group | Sample Size | Mean (SD) | Independent sample t-test (df) | p value | |
|---|---|---|---|---|---|
| Age | HC | 119 | 29.9 (10.3) | −1.59 (199) | .12 |
| IBS | 82 | 32.2 (9.6) | |||
| Early Trauma Inventory- Global | HC | 107 | 3.3 (3.7) | −1.72 (183) | .09 |
| IBS | 78 | 4.2 (3.7) | |||
| Anxiety | HC | 116 | 3.8 (3.1) | −3.33 (192) | .001 |
| IBS | 78 | 5.4 (3.3) | |||
| Depression | HC | 116 | 1.6 (2.3) | −2.67 (192) | .008 |
| IBS | 78 | 2.6 (2.5) | |||
| Patient Health Questionnaire | HC | 76 | 2.4 (2.0) | −6.99 (121) | 1.6 × 10−6 |
| IBS | 47 | 5.8 (3.3) | |||
| Trait Anxiety | HC | 119 | 45.5 (9.8) | −4.05 (197) | .00007 |
| IBS | 80 | 51.1 (9.6) | |||
| Catastrophizing | HC | 92 | 0.4 (0.6) | −6.63 (166) | 4.4 × 10−10 |
| IBS | 76 | 1.2 (1.0) |