Table 1 Comparison of cases † and controls* regarding matching criteria (univariate analysis with conditional logistic regression)
Cases † (n= 20) | Controls* (n= 40) | P | |
|---|---|---|---|
Age (years) ** | 57.3 ± 12.4 | 57.5 ± 10.9 | 0.89 |
RA/PsA/AS, n | 18/1/1 | 38/0/2 | 0.99 |
Rheumatic disorder duration (years) ** | 20.4 ± 9.4 | 20.3 ± 8.5 | 0.97 |
TJA infection localization for cases, and matched TJA localization for controls, n (%) | |||
- Hip | 5 (25) | 10 (25) | 1 |
- Knee | 12 (60) | 24 (60) | 1 |
- Ankle | 1 (5) | 2 (5) | 1 |
- Shoulder | 2 (10) | 4 (10) | 1 |