Table 4 Patient or admission factors according to annual hospital volume.
Hospital volume | ||||||||
|---|---|---|---|---|---|---|---|---|
<18 | Col % | 18 – 35 | Col % | >35 | Col % | p-value | ||
In-hospital mortality | Yes | 90 | 7.9 | 123 | 11.7 | 121 | 11.6 | 0.003 |
No | 1055 | 92.1 | 927 | 88.3 | 925 | 88.4 | ||
Gender | Male | 731 | 63.8 | 670 | 63.8 | 654 | 62.5 | 0.772 |
Female | 414 | 36.2 | 380 | 36.2 | 392 | 37.5 | ||
Age group | ≤ 50 | 128 | 11.2 | 108 | 10.3 | 95 | 9.1 | |
51–65 | 270 | 23.6 | 249 | 23.7 | 251 | 24.0 | ||
65–75 | 386 | 33.7 | 344 | 32.8 | 363 | 34.7 | 0.778 | |
75–84 | 314 | 27.4 | 293 | 27.9 | 287 | 27.4 | ||
≥ 85 | 47 | 4.1 | 56 | 5.3 | 50 | 4.8 | ||
Charlson score | 0 | 662 | 57.8 | 482 | 45.9 | 432 | 41.3 | |
1 | 173 | 15.1 | 164 | 15.6 | 179 | 17.1 | 0.000 | |
2 | 35 | 3.1 | 32 | 3.0 | 51 | 4.9 | ||
≥ 3 | 275 | 24.0 | 372 | 35.4 | 384 | 36.7 | ||
Admission type | Urgent | 265 | 23.1 | 346 | 33.0 | 359 | 34.3 | 0.000 |
Elective | 880 | 76.9 | 704 | 67.0 | 687 | 65.7 | ||
Region | A | 179 | 15.6 | 159 | 15.1 | 82 | 7.8 | |
B | 589 | 51.4 | 443 | 42.2 | 217 | 20.7 | 0.000 | |
C | 227 | 19.8 | 273 | 26.0 | 558 | 53.3 | ||
D | 150 | 13.1 | 175 | 16.7 | 189 | 18.1 | ||
Num. of secondary diagnoses | Mean (sd) | 2.9 (2.4) | 3.7 (2.7) | 4.7 (2.9) | 0.000* | |||
Length of Stay (LOS) | Median | 16 | 21 | 21 | 0.000* | |||
Total | 1145 | 1050 | 1046 | |||||