Table 2.
Mean Symptom Frequency and Severity in Women with Irritable Bowel Syndrome
| mean (SD) | Study-1 (N = 255) | Study-2 (N = 101) | Merged (N = 356) | pa |
|---|---|---|---|---|
| Mean symptom severity (rating scale: 0 – 4 points) | ||||
| Abdominal pain | 1.4 (0.6) | 1.4 (0.6) | 1.4 (0.3) | .999 |
| Fatigue | 1.2 (0.6) | 1.2 (0.7) | 1.2 (0.3) | .954 |
| Depression | 0.4 (0.5) | 0.4 (0.5) | 0.4 (0.3) | .891 |
| Anxiety | 0.7 (0.6) | 0.8 (0.7) | 0.7 (0.4) | .995 |
| Mean % of days with ‘moderate’ to ‘very severe’ for 28 days (rating scale: 0 – 100%) | ||||
| Abdominal pain | 36.9 (26.1) | 38.2 (26.5) | 37.8 (26.2) | .895 |
| Fatigue | 34.9 (27.7) | 36.2 (27.5) | 35.6 (27.6) | .821 |
| Depression | 9.9 (16.9) | 9.6 (17.8) | 9.8 (17.2) | .901 |
| Anxiety | 18.7 (22.2) | 19.5 (23.9) | 19.1 (23.0) | .934 |
Note.
Data are presented with mean and standard deviation (SD) using a daily diary over the past 24 hours for 28 days.
a
testing the differences in mean of symptoms between the Study-1 and Study-2.