Table V.

Multivariate logistic regression analysis of predictors of persistent ‘worse than death’ (WTD) status in patients WTD preoperatively (hips, n = 19; knees, n = 24) compared with patients who were no longer WTD at one year following joint arthroplasty (total hip arthroplasty (THA), n = 248; total knee arthroplasty (TKA), n = 244). Only variables significant at < 10% level on univariate analysis were included

Predictors in the model	B	OR (95% CI)	p-value
Hips (R2 = 0.516)
Liver disease	1.43	4.18 (0.37 to 47.4)	0.248
Back pain	0.84	2.30 (0.39 to 13.6)	0.356
Post-operative Oxford Hip Score	0.07	1.07 (0.96 to 1.21)	0.229
Improvement in Oxford Hip Score	0.13	1.14 (1.0 to 1.30)	0.039*
Improvement in EQ-5D health	0.02	1.02 (1.0 to 1.04)	0.111
Knees (R2 = 0.525)
Preoperative Oxford Knee Score	-0.05	0.95 (0.84 to 1.08)	0.437
Post-operative Oxford Knee Score	0.22	1.26 (1.14 to 1.38)	< 0.001*
Improvement in EQ-5D pain	-0.003	1.00 (0.98 to 1.02)	0.798
Improvement in EQ-5D health	0.02	1.02 (0.99 to 1.04)	0.306

^*Statistically significant

OR, odds ratio; CI, confidence interval; EQ-5D, EuroQol five-dimension