Predicting short stay total hip arthroplasty by use of the timed up and go-test

Table 3 Multivariate association between baseline characteristics and short stay (< 36 h) THA

	MODEL 1 Basic variables OR (95%CI)	p	MODEL 2 Basic variables + TUG OR (95%CI)	p
Age	0.93 (0.92–0.94)	0.000	0.94 (0.93–0.95)	0.000
Sex (male)	2.81 (2.21–3.56)*	0.000	2.57 (2.00–3.30)	0.000
ASA score
I	reference		reference
II	0.56 (0.43–0.73)	0.000	0.63 (0.48–0.82)	0.001
III/IV	0.22 (0.14–0.33)	0.000	0.28 (0.18–0.44)	0.000
TUG	X		0.92 (0.89–0.95)	0.000
Nagelkerke’s R²	0.24		0.27
Hosmer & Lemeshow test, p-value	0.26		0.30
AUC	0.75 (0.73–0.78)		0.77 (0.75–0.79)

*p < 0.05, ASA American Society of Anesthesiologists classification, TUG Timed up and go test, OR Odds ratio, CI Confidence interval, AUC Area under the curve

ISSN: 1471-2474