Table 2.
Baseline characteristics of IBS PROOF patient cohort
| Variable | Mean (n=257) |
|---|---|
| Age (mean years±s.d.) | 43±15 |
| Gender (% female) | 79% |
| Race | |
| White | 59% |
| Black | 14% |
| Other | 27% |
| Education | |
| Graduated high school | 78% |
| Graduated college | 65% |
| Graduated professional school | 27% |
| Income | |
| < $50,000 annual | 48% |
| $50,000–$100,000 annual | 26% |
| >$100,000 annual | 26% |
| Marital status (% married) | 34% |
| IBS subtype | |
| IBS with constipation (IBS-C) | 16% |
| IBS with diarrhea (IBS-D) | 32% |
| Mixed IBS (IBS-M) | 49% |
| IBS duration | |
| 6 months to 1 year | 4.0% |
| 1–2 years | 7.4% |
| 2–5 years | 18.1% |
| 5–10 years | 23.5% |
| 10–20 years | 30.9% |
| >20 years | 16.1% |
| Global IBS Severity (0–20 rating scale) | 11±5 |
| IBSSS trichotomized severity | |
| Mild (score of 75–175) | 17% |
| Moderate (score of 175–300) | 28% |
| Severe (>300) | 55% |
| IBS-QOL overall score (mean±s.d.) | 61.4±20 |
| Worker productivity activity index WPAI:IBS) | |
| % Work week absent because of IBS (absenteeism) | 3.9% |
| % Work week impaired by IBS (presenteeism) | 26.7% |
IBS, irritable bowel syndrome; IBSSS, IBS severity scale; PROOF, Patient Reported Observed Outcomes and Function.