Irritable bowel symdrome (IBS) specific health related quality of life (HRQOL) instruments
| Validity | Reliability | |||||||
|---|---|---|---|---|---|---|---|---|
| Instrument | Items/scoring7-150 | Domains | Face | Content | Construct | IC | TR | |
| IBS-QOL51 | 34/0–100 | Dysphoria, activity, body image, anxiety, food avoidance, social, sexual relations, relationships | L, E, P | 2 field tests | SF-36, PGWB, SCL90-R | 0.65–0.92 | 0.69–0.89 | |
| IBSQ52 | 26/26–182 | Symptoms, fatigue, activity, emotional | L, E, P | 1 field test | NT | NT | NT | |
| IBSQOL49 | 30/0–100 | Emotional, mental health, health belief, sleep, energy, physical functioning, diet, social role, physical role, sexual relations | L, E | 2 field tests | NT | 0.66–0.93 | NT | |
| FDDQL39 | 43/0–100 | Activity, anxiety, diet, sleep, discomfort, coping, control, stress | L, E, P | 3 field tests | SF-36 | 0.69–0.89 | 0.98 | |
↵7-150 Scores range from worst to best QOL.
NT, not tested; IC, internal consistency (Cronbach's alpha); TR, test-retest.
L, literature review; E, expert opinion; P, patient interviews.