Baseline clinical descriptors of osteoarthritis by surgical outcome for total joint replacement
| n (%), unless otherwise specified | |||||
|---|---|---|---|---|---|
| Clinical descriptor | Total sample (n = 257) | TJR (n = 107) | No TJR (n = 110) | Loss to follow-up (n = 40) | P-value for TJR vs no TJR |
| Duration, mean (SD) months | |||||
| All patients | 107.5 (SD 112.7) | 79.8 (SD 73.5) | 134.8 (SD 135.3) | 126.0 (SD 135.0) | 0.037 |
| Hip patients | 96.2 (SD 108.8) | 73.5 (SD 63.6) | 141.8 (SD 159.5) | 94.2 (SD 106.4) | 0.243 |
| Knee patients | 120.9 (SD 116.4) | 91.1 (SD88.9) | 130.1 (SD 118.9) | 177.8 (SD 166.5) | 0.176 |
| Assistance with activities of daily living | |||||
| All patients | 119(47.0) | 48 (45.7) | 47(43.1) | 24(61.5) | 0.702 |
| Hip patients | 62 (46.6) | 27 (40.9) | 19 (43.2) | 16 (69.6) | 0.812 |
| Knee patients | 57 (47.5) | 21 (53.8) | 28(43.1) | 8(50.0) | 0.338 |
| Uses walking stick | |||||
| All patients | 137(53.9) | 63 (58.9) | 48 (44.9) | 26(65.0) | 0.04 |
| Hip patients | 70(52.2) | 38(56.7) | 18(40.9) | 14(60.9) | 0.063 |
| Knee patients | 67(55.8) | 25(62.5) | 30 (47.6) | 12(70.6) | 0.16 |
| Best description of frequency of pain | 0.002 | ||||
| Always present | 142 (56.1) | 67 (63.8) | 55 (50.5) | 20 (51.3) | |
| Often present | 86 (34.0) | 35 (33.3) | 35 (32.1) | 16 (41.0) | |
| Sometimes present | 23(9.1) | 3(2.9) | 17(15.6) | 3(7.7) | |
| Present very little | 2 (0.8) | 0 | 2(1.8) | 0 | |
| Missing data | 4 | 2 | 1 | 1 | |
| Waking at night due to pain | 0.205 | ||||
| Not at all | 22 (8.6) | 8(7.5) | 12 (10.9) | 2(5.1) | |
| 1 or 2 nights per week | 25(9.8) | 10 (9.4) | 11 (10.0) | 4(10.3) | |
| Some nights | 84 (32.9) | 32 (30.2) | 39(35.5) | 13(33.3) | |
| Most nights | 124(48.6) | 56 (52.8) | 48 (43.6) | 20(51.3) | |
| Missing data | 2 | 1 | 0 | 1 | |
| Frequency of pain medication | 0.037 | ||||
| >Once/day | 149 (59.8) | 68 (64.8) | 55 (51.4) | 26 (70.3) | |
| Daily | 40 (16.1) | 16 (15.2) | 19 (17.8) | 5(13.5) | |
| <1 month | 34(13.7) | 13(12.4) | 19(17.8) | 2 (5.4) | |
| ≥1 month | 14(5.6) | 5 (4.8) | 7(6.5) | 2 (5.4) | |
| Never | 12(4.8) | 3(2.9) | 7(6.5) | 2 (5.4) | |
| Missing data | 8 | 2 | 3 | 3 | |
| Current treatment | |||||
| Acetaminophen | 105 (40.9) | 26 (24.3) | 36 (32.7) | 11 (27.5) | |
| COX-2 inhibitors | 7(2.7) | 3 (2.8) | 4(3.6) | 2(5.0) | |
| NSAIDS | 117(45.5) | 42 (39.3) | 62 (56.4) | 16(40.0) | |
| Weak opioids | 121 (47.1) | 55(51.4) | 59 (53.6) | 22(55.0) | |
| Strong opioids | 1 (0.4) | 0(0) | 1 (0.9) | 0(0) | |
| Topical NSAIDs | 7(2.7) | 2(1.9) | 4(3.6) | 3(7.5) | |
| None | 19 (7.4) | 3 (2.8) | 9 (8.2) | 2(5.0) | |
COX = cyclooxygenase. NSAIDs = non-steroidal anti-inflammatory drugs. SD = standard deviation. TJR = total joint replacement.