Table 5.
Propensity score-weighted regression results for risk of all-cause and aseptic revision in conventional bearings compared with HXLPE bearings for the overall THA, Duraloc, and Reflection cohorts
| All (N = 26,823) | Duraloc cohort (N = 1146) | Reflection cohort (N = 5202) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Crude HR (95% CI) |
Adjusted* HR (95% CI) |
p value (adjusted model) |
Crude HR (95% CI) |
Adjusted* HR (95% CI) |
p value (adjusted model) |
Crude HR (95% CI) |
Adjusted* HR (95% CI) |
p value (adjusted model) |
|
| All-cause | 1.73 (1.38–2.18) | 1.75 (1.37–2.24) | < 0.001 | 2.67 (1.54–4.64) | 3.15 (1.65–6.02) | < 0.001 | 1.83 (1.21–2.77) | 1.93 (1.23–3.01) | 0.004 |
| Aseptic | 1.91 (1.48–2.45) | 1.91 (1.46–2.50) | < 0.001 | 2.35 (1.30–4.25) | 2.87 (1.43–5.78) | 0.003 | 2.14 (1.36–3.37) | 2.44 (1.49–3.48) | < 0.001 |
* Cox regression stratified by propensity score and also using surgeon volume, site volume, and hybrid fixation versus other as covariates; propensity score model includes body mass index (continuous), age (continuous), gender, race, diabetes, diagnosis, surgeon average volume, fellowship status, site average volume, American Society of Anesthesiologists, and operative time. HXLPE = highly crosslinked polyethylene; HR = hazard ratio; CI = confidence interval.