Table 3.
Results of testing of associations between risk factors and ARMD using logistic regression with random intercept for patient, with crude odds ratios (ORs) and 95% confidence intervals (CIs)
| ARMD definite or probable (n = 17) vs. ARMD not found (n = 25) |
|||
|---|---|---|---|
| Risk factor | OR (95% CI) | p-value | |
| Age at follow-up | 1.03a | (0.93–1.13) | 0.5 |
| Sex (male vs. female) | 10.8 | (0.7–165) | 0.08 |
| Inclination angle of the cup | 1.05a | (0.93–1.2) | 0.4 |
| Bilateral MoM | 0.33 | (0.05–2.1) | 0.2 |
| Bilateral THA | 0.55 | (0.09–3.4) | 0.5 |
| Diagnosis secondary vs. primary OA | 2.0 | (0.27–14) | 0.5 |
| Head size (≥ 54 vs. ≤ 50 mm) | 4.1 | (0.66–25) | 0.1 |
ARMD: adverse reaction to metal debris;
MoM: metal-on-metal implant; THR: total hip arthroplasty
OA: osteoarthritis.
a
For 1 unit increase (continuous variable).