Table 1. Characteristics of hospitals for the study.
| Variable | Mean ± SD, median (1Q, 3Q), or n (%) | |
|---|---|---|
| Number of hospitals | 195 | |
| Number of beds | ||
| Mean ± SD | 322.8 | ± 200.3 |
| Median (1Q, 3Q) | 283 | (180, 414) |
| Category | ||
| –199 beds, n (%) | 63 | (32.3%) |
| 200–499 beds, n (%) | 101 | (51.8%) |
| 500– beds, n (%) | 31 | (15.9%) |
| Number of monthly cases per hospital | ||
| Inpatients | ||
| Mean ± SD | 585.4 | ± 432.1 |
| Median (1Q, 3Q) | 460 | (259, 815) |
| Urgent admission | ||
| Mean ± SD | 297.3 | ± 203.6 |
| Median (1Q, 3Q) | 241 | (137, 410) |
| Admission with surgery | ||
| Mean ± SD | 258.3 | ± 218.6 |
| Median (1Q, 3Q) | 185 | (102, 351) |
| Outpatients | ||
| Mean ± SD | 11427.3 | ± 8245.2 |
| Median (1Q, 3Q) | 9221 | (6116, 14658) |
| Monthly hospital charges per hospital (million Japanese Yen) | ||
| Sum | ||
| Mean ± SD | 738.3 | ± 642.5 |
| Median (1Q, 3Q) | 512 | (320, 939) |
| Inpatients | ||
| Mean ± SD | 514.2 | ± 428.8 |
| Median (1Q, 3Q) | 378 | (222, 659) |
| Outpatients | ||
| Mean ± SD | 224.0 | ± 231.4 |
| Median (1Q, 3Q) | 148 | (85, 277) |
SD, standard deviation; 1Q, 1st quartile; 3Q, 3rd quartile.