Baseline demographic data of 74 patients followed up for six years. Results for continuous variables are expressed as mean (standard deviation)
| Data at entry | Patients without disease progression (n=42) | Patients with disease progression (n=32) | p Value§ |
|---|---|---|---|
| *Weight (kg)/(height (m))2; †evaluated using the knee rating system of the Hospital for Special Surgery34; ‡see fig 1; §continuous variables were examined by unpaired t test; ¶discrete variables were examined by χ2 test. | |||
| Age | 68.7 (8.7) | 70.5 (6.2) | 0.30 |
| Sex, male/female (n) | 12/30 | 4/28 | 0.17¶ |
| Body mass index* | 24.1 (3.2) | 24.5 (4.3) | 0.14 |
| Pain† | 25.5 (4.1) | 22.7 (5.1) | 0.01 |
| Mechanical axis (°)‡ | 4.6 (3.8) | 6.3 (4.0) | 0.06 |
| Joint space width (mm) | 3.4 (1.2) | 3.2 (1.1) | 0.31 |
| Adduction moment (% wt × ht) | 4.0 (1.4) | 6.1 (1.0) | <0.0001 |
| Kellgren-Lawrence grade | |||
| 1 | 12 | 8 | 0.16¶ |
| 2 | 13 | 9 | |
| 3 | 15 | 8 | |
| 4 | 2 | 7 | |
| Joint space narrowing grade | |||
| 0 | 9 | 1 | 0.16¶ |
| 1 | 22 | 20 | |
| 2 | 9 | 9 | |
| 3 | 2 | 2 | |