| KL grade | AUDIT scorea | p value |
|---|
| Zone I | Zone II | Zone III | Zone IV |
|---|
| N | % | N | % | N | % | N | % |
|---|
| Hip joint |
| 0 (normal) | 4235 | 82.3 | 929 | 79.1 | 279 | 76.8 | 303 | 78.5 | < 0.001* |
| 1 (suggestive of OA) | 870 | 16.9 | 230 | 19.6 | 83 | 22.9 | 78 | 20.2 | |
| 2 (non-severe OA) | 33 | 0.6 | 13 | 1.1 | 0 | 0.0 | 4 | 1.0 | |
| 3 (severe OA) | 12 | 0.2 | 2 | 0.2 | 1 | 0.3 | 1 | 0.3 | |
| Knee joint |
| 0 (normal) | 2065 | 40.0 | 547 | 46.6 | 172 | 47.4 | 189 | 49.0 | < 0.001* |
| 1 (suggestive of OA) | 1220 | 23.7 | 342 | 29.2 | 102 | 28.1 | 106 | 27.5 | |
| 2 (mild OA) | 729 | 14.2 | 150 | 12.8 | 56 | 15.4 | 59 | 15.3 | |
| 3 (moderate OA) | 775 | 15.1 | 92 | 7.9 | 29 | 8.0 | 23 | 5.9 | |
| 4 (severe OA) | 362 | 7.0 | 41 | 3.5 | 4 | 1.1 | 9 | 2.3 | |
| Lumbar spine |
| 0 (normal) | 1100 | 21.8 | 244 | 21.2 | 72 | 20.6 | 68 | 18.3 | < 0.001* |
| 1 (suggestive of OA) | 2228 | 44.1 | 598 | 52.1 | 188 | 53.7 | 199 | 53.6 | |
| 2 (OA) | 1718 | 34.1 | 307 | 26.7 | 90 | 25.7 | 104 | 28.1 | |
- KL Kellgren-Lawrence; AUDIT Alcohol Use Disorders Identification Test; KNHANES Korean National Health and Nutrition Examination Survey
- *Statistical significance was set as p < 0.05
- a AUDIT scores are calculated as the sum of 10 items, and were categorized into Zone I (0–7), Zone II (8–15), Zone III (16–19), and Zone IV (20+)
