Table A.2.
Characteristics of patients with a recorded diagnosis of knee osteoarthritis in their electronic health record by outcome (N = 6043)
| Patient characteristics | TKR (outcome) N = 1095 |
Death (competing risk) N = 437 |
No TKR or death N = 4511 |
|---|---|---|---|
| n (%) | n (%) | n (%) | |
| Age (years), mean (SD) | 67.1 (8.8) | 77.2 (7.9) | 68.3 (11.0) |
| Patient geographical location∗ | |||
| Major cities of Australia | 598 (54.6) | 225 (51.5) | 2473 (54.8) |
| Inner regional Australia | 346 (31.6) | 154 (35.2) | 1390 (30.8) |
| Remote Australia | 151 (13.8) | 58 (13.3) | 648 (14.4) |
| Prescribing of OA medication/s | 543 (49.6) | 262 (60.0) | 1897 (42.1) |
| Count of chronic conditions from CCI, median [IQR] | 0 [0, 1] | 1 [1, 2] | 0 [0, 1] |
| 0 conditions | 672 (61.4) | 103 (23.6) | 2465 (54.6) |
| 1 condition | 300 (27.4) | 149 (34.1) | 1352 (30.0) |
| 2 conditions | 92 (8.4) | 123 (28.2) | 468 (10.4) |
| 3 or more conditions | 31 (2.8) | 62 (14.2) | 226 (5.0) |
| Mental health condition | 278 (25.4) | 141 (32.3) | 1236 (27.4) |
| Previous knee replacement | 165 (15.1) | 76 (17.4) | 509 (11.3) |
| Past knee surgery on either knee (excluding TKR) | 138 (12.6) | 12 (2.8) | 297 (6.6) |
AbbreviationsTKR = total knee replacement; SD = standard deviation; CCI=Charlson comorbidity index; IQR = interquartile range.
Notes: Counts and percentages presented unless otherwise stated.
∗Based on Australian Bureau of Statistics (ABS) Australian Statistical Geography Standard (ASGS) remoteness areas (47).