Baseline characteristics of knee osteoarthritis predicting subsequent knee replacement
| No knee replacement (n=437) | Knee replacement (n=94) | Total (n=531) | |
|---|---|---|---|
| K&L radiological grade | |||
| n | 437 | 94 | 531 |
| Grade 0–2 | 221 (50.6) | 16 (17.0) | 237 (44.6) |
| Grade 3–4 | 216 (49.4) | 78 (83.0) | 294 (55.4) |
| Missing data | 0 | 0 | 0 |
| Ultrasonographic knee effusion depth | |||
| n | 436 | 94 | 530 |
| <4 mm | 279 (64.0) | 32 (34.0) | 311 (58.7) |
| ≥4 mm | 157 (36.0) | 62 (66.0) | 219 (41.3) |
| Missing data | 1 | 0 | 1 |
| Knee pain intensity on VAS | |||
| n | 436 | 94 | 530 |
| <60 mm | 194 (44.5) | 29 (30.9) | 223 (42.1) |
| ≥60 mm | 242 (55.5) | 65 (69.1) | 307 (57.9) |
| Missing data | 1 | 0 | 1 |
| Disease duration | |||
| n | 435 | 94 | 529 |
| <5 Years | 259 (59.5) | 42 (44.7) | 301 (56.9) |
| ≥5 Years | 176 (40.5) | 52 (55.3) | 228 (43.1) |
| Missing data | 2 | 0 | 2 |
Results are shown as number or number (%).
K&L, Kellgren and Lawrence; VAS, visual analogue scale.