Table 1.
Patients without PROMs data (n = 468,456) after linking NJR data to HES PROMs dataset. Values are count (%) unless otherwise specified
| TKR | UKR | |
|---|---|---|
| Covariate | (n = 433,555) | (n = 34,901) |
| Admission type | ||
| Elective | 432,181 (100) | 34,842 (100) |
| Emergency | 982 (0) | 35 (0) |
| Other | 392 (0) | 24 (0) |
| Sex | ||
| Female | 252,531 (58) | 16,717 (48) |
| Male | 181,024 (42) | 18,184 (52) |
| Age at surgery, | ||
| mean (SD) | 70.2 (9.5) | 63.7 (10.0) |
| BMI, n | 257,360 ( | 22,024 ( |
| mean (SD) | 31.1 (5.6) | 30.5 (5.2) |
| Primary diagnosis | ||
| Primary OA | 414,553 (96) | 34,299 (98) |
| Primary OA and other | 5,387 (1) | 236 (1) |
| Other | 13,615 (3) | 366 (1) |
| Charlson comorbidity index | ||
| None | 302,652 (70) | 26,106 (75) |
| Mild | 92,549 (21) | 6,724 (19) |
| Moderate | 25,839 (6) | 1,495 (4) |
| Severe | 12,515 (3) | 576 (2) |
| ASA grade | ||
| 1 | 40,922 (9) | 6,680 (19) |
| 2 | 306,864 (71) | 24,579 (70) |
| 3 or above | 85,769 (20) | 3,642 (11) |
| Ethnicity | ||
| White | 403,614 (93) | 33,296 (95) |
| Black (Caribbean) | 3,495 (1) | 150 (1) |
| Black (African) | 2,086 (1) | 113 (0) |
| Black (other) | 838 (0) | 33 (0) |
| Indian | 12,124 (3) | 554 (2) |
| Pakistani | 4,852 (1) | 211 (1) |
| Bangladeshi | 379 (0) | 20 (0) |
| Chinese | 341 (0) | 17 (0) |
| Other | 5,826 (1) | 507 (1) |
| Rural/urban classification | ||
| Urban | 332,812 (77) | 24,934 (72) |
| Town/fringe | 48,461 (11) | 4,280 (12) |
| Village/hamlet | 52,282 (12) | 5,687 (16) |
| Indices of multiple deprivation | ||
| Most deprived (20%) | 73,212 (17) | 4,328 (12) |
| More deprived (20–40%) | 84,133 (19) | 6,155 (18) |
| Middle-point | 95,016 (22) | 7,728 (22) |
| Less deprived (20–40%) | 95,598 (22) | 8,130 (23) |
| Least deprived (20%) | 85,596 (20) | 8,560 (25) |