Table 2.
Characteristics of patients undergoing colonic resection for rectal cancer in 2012–2015, according to hospital volume quintile
| Hospital volume quintile | ||||||
|---|---|---|---|---|---|---|
| Very low (n = 12 864) | Low (n = 12 738) | Medium (n = 12 989) | High (n = 12 916) | Very high (n = 12 842) | P * | |
| Ventilation > 48 h | 695 (5·4) | 655 (5·1) | 577 (4·4) | 534 (4·1) | 536 (4·2) | < 0·001 |
| Mortality | 250 (36·0) | 224 (34·2) | 200 (34·7) | 192 (36·0) | 155 (28·9) | 0·080 |
| Emergency procedure | 2848 (22·1) | 2617 (20·5) | 2407 (18·5) | 1992 (15·4) | 1962 (15·3) | 0·001† |
| Mortality | 257 (9·0) | 192 (7·3) | 162 (6·7) | 151 (7·6) | 94 (4·8) | 0·001 |
| Transfusion of ≥ 6 erythrocyte concentrates | 738 (5·7) | 725 (5·7) | 699 (5·4) | 671 (5·2) | 676 (5·3) | 0·190 |
| Mortality | 169 (22·9) | 169 (23·3) | 151 (21·6) | 167 (24·9) | 130 (19·2) | 0·140 |
| Stroke | 58 (0·5) | 44 (0·3) | 52 (0·4) | 46 (0·4) | 37 (0·3) | 0·260 |
| Mortality | 12 (21) | 16 (36) | 16 (31) | 9 (20) | 9 (24) | 0·290 |
| Pulmonary embolism | 97 (0·8) | 118 (0·9) | 91 (0·7) | 112 (0·9) | 96 (0·7) | 0·220 |
| Mortality | 37 (38) | 33 (28·0) | 26 (29) | 27 (24·1) | 15 (16) | 0·010 |
| Peritonitis/sepsis | 1424 (11·1) | 1417 (11·1) | 1269 (9·8) | 1227 (9·5) | 1193 (9·3) | < 0·001 |
| Mortality | 307 (21·6) | 278 (19·6) | 223 (17·6) | 210 (17·1) | 182 (15·3) | < 0·001 |
| Myocardial infarction | 112 (0·9) | 103 (0·8) | 113 (0·9) | 100 (0·8) | 93 (0·7) | 0·640 |
| Mortality | 31 (27·7) | 30 (29·1) | 26 (23·0) | 24 (24) | 24 (26) | 0·840 |
| Anastomotic leak | 1111 of 10 316 (10·8) | 1156 of 10 052 (11·5) | 1276 of 10 185 (12·5) | 1253 of 10 108 (12·4) | 1202 of 10 170 (11·8) | 0·003 |
| Mortality | 121 (10·9) | 105 (9·1) | 106 (8·3) | 84 (6·7) | 76 (6·3) | < 0·001 |
| Relaparotomy, adhesiolysis or decompression | 760 (5·9) | 745 (5·8) | 862 (6·6) | 827 (6·4) | 884 (6·9) | 0·001 |
| Mortality | 146 (19·2) | 139 (18·7) | 128 (14·8) | 128 (15·5) | 107 (12·1) | < 0·001 |
| (Protective) stoma | 4677 (36·4) | 5300 (41·6) | 5660 (43·6) | 5968 (46·2) | 6230 (48·5) | < 0·001 |
| Mortality | 222 (4·7) | 199 (3·8) | 152 (2·7) | 163 (2·7) | 127 (2·0) | < 0·001 |
Values in parentheses are percentages.
*
χ2 test for difference between subgroups, except
†
non‐parametric test for trend.