Table 2.
Baseline demographics of the whole cohort split by modified-VHWG grade
| Modified VHWG grade N (%) | Whole cohort N (%) | |||
|---|---|---|---|---|
| 1 | 2 | 3 | Total | |
| Sex (male) | 81,271 (47.3) | 9,905 (46.4) | 10,257 (49.0) | 101,433 (47.4) |
| Age (mean ± SD) | 54.63 (15.8) | 64.05 (12.2) | 64.98 (14.7) | 56.59 (15.9) |
| 18–29 | 9,759 (5.7) | 120 (0.6) | 402 (1.9) | 10,281 (4.8) |
| 30–39 | 23,731 (13.8) | 592 (2.8) | 957 (4.6) | 25,280 (11.8) |
| 40–49 | 33,729 (19.6) | 2,095 (9.8) | 4,982 (9.5) | 37,806 (17.7) |
| 50–59 | 35,122 (20.4) | 4,063 (19.0) | 3,226 (15.4) | 42,411 (19.8) |
| 60–69 | 34,786 (20.2) | 6,791 (31.8) | 5,221 (24.9) | 46,798 (21.9) |
| 70–79 | 26,000 (15.1) | 5,865 (27.5) | 5,945 (28.4) | 37,810 (17.7) |
| > 80 | 8,656 (5.0) | 1,820 (8.5) | 3,220 (15.4) | 13,696 (6.4) |
| Hernia comorbidity | N/A | 21,346 (100) | 4,102 (19.6) | 25,448 (11.9) |
| Diabetes | N/A | 14,779 (69.2) | 2,604 (12.4) | 17,383 (8.1) |
| COPD | N/A | 7,676 (36.0) | 1,747 (8.3) | 9,423 (4.4) |
| Immuno-deficiency | N/A | 88 (0.4) | 18 (0.0) | 106 (0.0) |
| IHD | 5,553 (3.2) | 2,658 (12.5) | 1,741 (8.3) | 9,952 (4.6) |
| Pre-existing IBD | 1,674 (1.0) | 247 (1.2) | 1,484 (7.1) | 3,405 (1.6) |
| Crohn’s Disease | 1,152 (0.7) | 137 (0.6) | 870 (4.2) | 2,159 (1.0) |
| UC | 522 (0.3) | 110 (0.5) | 614 (2.9) | 1,246 (0.6) |
| Ehlers–Danlos | 20 (0.0) | 1 (0.0) | 3 (0.0) | 24 (0.0) |
| Contaminated hernia repair | N/A | N/A | 20,953 (100) | 20,953 (9.8) |
| Emergency operation | 21,305 (12.4) | 4,337 (20.3) | 8,814 (42.1) | 34,456 (16.1) |
| Planned as day case | 53,695 (31.3) | 3,053 (14.3) | 463 (2.2) | 57,211 (26.7) |
VHWG Ventral Hernia Working Group, IHD ischaemic heart disease, IBD inflammatory bowel disease, UC ulcerative colitis