|  | Hip replacement | Knee replacement | Hernia repair | VV surgery | ||||
---|---|---|---|---|---|---|---|---|---|
 |  | n (%) | Responded% | n (%) | Responded% | n (%) | Responded% | n (%) | Responded% |
Administration of | On admission | 4,671 (16.5) | 85.7 | 5,526 (18.3) | 86.5 | 9,233 (37.4) | 75.8 | 5,996 (53.1) | 67.2 |
questionnaire* | Before admission | 23,650 (83.5) | 87.2 | 24,664 (81.7) | 88.2 | 15,428 (62.6) | 78.1 | 5,289 (46.9) | 68.5 |
 |  | 1,418 |  | 1,883 |  | 586 |  | 439 |  |
Provider type | NHS | 30,514 (80.4) | 84.3 | 36,228 (81.6) | 84.5 | 29,265 (83.7) | 73.0 | 12,951 (91.9) | 64.8 |
 | Independent | 7,477 (19.6) | 88.2 | 8,191 (18.4) | 88.8 | 5,699 (16.3) | 72.8 | 1,149 (8.1) | 65.4 |
 | missing | 0 |  | 3 |  | 0 |  | 0 |  |
Provider | below 70% | 13,721 (42.0) | 84.6 | 15,923 (40.8) | 85.1 | 22,449 (73.2) | 72.8 | 9,838 (69.8) | 63.7 |
recruitment rate** | 70% or more | 18,962 (58.0) | 84.7 | 23,151 (59.2) | 84.8 | 8,226 (26.8) | 73.3 | 2,910 (20.6) | 67.5 |
 | missing | 5,278 |  | 5,348 |  | 4,289 |  | 1,352 |  |