Table 2.
Interaction Between Age, Body Mass Index Influences the Risk of Accelerated Knee Osteoarthritis (KOA) Versus Common KOA
| Common KOA | Accelerated KOA | Adjusted Odds Ratio (95% Confidence Interval) | |
|---|---|---|---|
| (REF) | Accelerated KOA | ||
| All Participants | (n=184) | (n=52) | |
|
| |||
| Low Risk Group (n=129) | 110 (60%) | 19 (37%) | REFERENCE |
| Older with BMI < 35 kg/m2 (n=64) | 40 (22%) | 24 (46%) | 3.47 (1.70, 7.10) |
| Younger with BMI ≥ 32.5 kg/m2 (n=43) | 34 (18%) | 9 (17%) | 1.43 (0.58, 3.53) |
|
| |||
| Injured | (n=18) | (n=13) | |
|
| |||
| Low Risk Group (n=14) | 11 (61%) | 3 (23%) | REFERENCE |
| Older with BMI < 35 kg/m2 (n=9) | 2 (11%) | 7 (54%) | 10.27 (1.25, 84.25) |
| Younger with BMI ≥ 32.5 kg/m2 (n=8) | 5 (28%) | 3 (23%) | 1.74 (0.23, 13.23) |
|
| |||
| Un-injured | (n=166) | (n=39) | |
|
| |||
| Low Risk Group (n=115) | 99 (60%) | 16 (41%) | REFERENCE |
| Older with BMI < 35 kg/m2 (n=55) | 38 (23%) | 17 (44%) | 2.68 (1.23, 5.86) |
| Younger with BMI ≥ 32.5 kg/m2 (n=35) | 29 (17%) | 6 (15%) | 1.32 (0.47, 3.70) |
Note: The model with all participants was adjusted for sex and injury. The models among those with and without an injury were adjusted for sex. The cut-off for age was 65 years. Bold font=significant odds ratios. Percentages are reported by column (within Common KOA and Accelerated KOA)