Table 1. Characteristics, imaging studies and length of hospital stay of patients with acute biliary pancreatitis by gender.
| Variablesa | Men (n = 6,628) | Women (n = 6,482) | P values |
| Age, year | 62 (48–74) | 64 (51–74) | <0.001 |
| ≥65 | 45.2 | 49.1 | <0.001 |
| Hospital level | 0.056 | ||
| Medical center | 33.3 | 34.8 | |
| Regional hospital | 46.2 | 46.1 | |
| District hospital | 20.5 | 19.0 | |
| Urbanization | 0.001 | ||
| Urban | 55.8 | 56.8 | |
| Suburban | 33.5 | 30.9 | |
| Rural | 10.7 | 12.3 | |
| Charlson Comorbid Index | <0.001 | ||
| 0 | 41.7 | 48.2 | |
| 1 | 39.8 | 35.9 | |
| 2 | 13.7 | 11.8 | |
| ≥3 | 4.8 | 4.1 | |
| Comorbid conditions | |||
| Cerebrovascular | 2.2 | 1.8 | 0.106 |
| Cardiovascular | 1.9 | 1.8 | 0.508 |
| Respiratory | 3.2 | 1.7 | <0.001 |
| Renal | 2.4 | 3.1 | 0.012 |
| Hepatic | 26.4 | 20.7 | <0.001 |
| Peptic ulcer | 19.2 | 15.6 | <0.001 |
| Diabetes | 15.7 | 17.8 | 0.001 |
| Cancer | 2.7 | 2.1 | 0.025 |
| Others | 0.4 | 0.6 | 0.079 |
| Computed tomography | 42.4 | 39.2 | <0.001 |
| Magnetic resonance imaging | 6.7 | 6.7 | 0.922 |
| Hospital length of stay, d | 6 (4–10) | 6 (4–10) | 0.562 |
a
Values are expressed as median (interquartile range) or percentages.