Table 1.
Characteristics of study population.
| All Patients (n = 3,411) | GERD (n = 244) | Non-GERD (n = 3,167) | |
|---|---|---|---|
| Age in year, median (IQR) | 55 (25) | 65 (19) | 55 (25) |
| % Male sex | 48% | 36% | 49% |
| BMI in kg/m2, median (IQR) | 27.8 (7.7) | 29.5 (8.7) | 27.7 (7.7) |
| Apnea-hypopnea index, median (IQR) | 4.2 (13.9) | 6.1 (14.9) | 4.1 (13.8) |
| Periodic limb movement index, median (IQR) | 0.0 (14.0) | 0.7 (21.1) | 0.0 (13.5) |
| Insomnia, n (%) | 652 (19.1%) | 80 (32.8%) | 572 (18.1%) |
| Depression, n (%) | 716 (21.0%) | 75 (30.7%) | 641 (20.2%) |
| Fibromyalgia/neuropathic pain, n (%) | 81 (2.4%) | 17 (7%) | 64 (2.0%) |
BMI = body mass index, GERD = gastroesophageal reflux disease, IQR = interquartile range.