Table 4.
Multivariate analysis of the factors for dislocation
| Factors | Odds ratio | χ2 | 95 % confidence interval | p value |
|---|---|---|---|---|
| Age | 1.00 | 0.00 | 0.9489–1.0552 | 0.9752 |
| BMI | 0.95 | 0.49 | 0.8138–1.1101 | 0.4860 |
| Gender (M:F) | 2.63 | 0.15 | 0.5439–11.558 | 0.2194 |
| Primary diagnosis | ||||
| OA/RA | 1.51 | 5.83 | 0–47.209 | 0.7150 |
| OA/ONFH | 6.36 | 5.83 | 1.40666–28.1162 | 0.0173 |
| Head size (26:32) | 3.35 | 7.08 | 0–0.47125 | 0.0078 |
| Stem offset | 0.86 | 0.86 | 0.12103–4.03841 | 0.8593 |
| Cup abduction | 0.99 | 0.01 | 0.88801–1.10777 | 0.9061 |
| CA technique | 5.79 | 6.23 | 1.08845–118.4604 | 0.0383 |
BMI body mass index, OA osteoarthritis, RA rheumatoid arthritis, ONFH osteonecrosis of the femoral head, CA combined anteversion