Table 1. Breakdown of characteristics and their statistical significance.
GERD, gastroesophageal reflux disease; OSA, obstructive sleep apnea; DM, diabetes; HTN, hypertension; Afib, atrial fibrillation; CHF, congestive heart failure; PHTN, pulmonary hypertension.
| Characteristics | GERD only (22,677,620) | OSA and GERD (2,769,350) | P-value |
| Age (years) | 65.42 | 64.47 | <0.0001 |
| Gender (%) | <0.0001 | ||
| Males | 40.38 | 49.37 | |
| Females | 59.62 | 50.63 | |
| Race (%) | <0.0001 | ||
| White | 75.91 | 78.27 | |
| Black | 12.5 | 13.65 | |
| Hispanic | 7.21 | 5.3 | |
| Others | 4.38 | 2.78 | |
| Hospital region (%) | |||
| Northeast | 19.18 | 16.82 | <0.0001 |
| Midwest | 24.06 | 31.17 | |
| South | 41.45 | 37.09 | |
| West | 15.32 | 14.91 | |
| Hospital bed size (%) | <0.0001 | ||
| Small | 20.93 | 19.85 | |
| Medium | 28.91 | 27.66 | |
| Large | 50.16 | 52.48 | |
| Comorbidities (%) | <0.0001 | ||
| Obesity | 16.59 | 45.25 | |
| Smoke | 41.8 | 43.87 | |
| DM | 30.37 | 47.62 | |
| HTN | 31 | 22.42 | |
| Afib | 16.61 | 23 | |
| CHF | 19.85 | 32.33 | |
| PHTN | 0.04 | 0.1 |