. Author manuscript; available in PMC: 2021 Jan 1.

Published in final edited form as: J Arthroplasty. 2019 Aug 8;35(1):82–88. doi: 10.1016/j.arth.2019.07.047

Table 4.

Multivariate Analysis of Risk Factors Significantly Associated With Length of Stay >3 Days.

Characteristic	Class	OR (95% CI)	P Value
Hypotensive events on POD 0/1^a,b		1.305 (1.036–1.645)	.0239
Race	Nonwhite vs white	2.012 (1.437–2.817)	<.0001
Marital status	Not married vs married	1.526 (1.101–2.119)	<.0001
Age^a,c		1.465 (1.163–1.845)	<.0001
OME (mg)^a,c		1.044 (1.030–1.058)	<.0001
Lab abnormalities	Low calcium	2.149 (1.463–3.157)	<.0001
	Low hemoglobin	2.625 (1.760–3.914)	<.0001
Narcotic use on day 0/1		1.903 (1.090–3.323)	<.0001

OR, odds ratio; CI, confidence interval; POD, postoperative day; OME, oral morphine equivalents; SD, standard deviation.

Variables presented as mean ± SD.

OR reported per 5 additional events.

OR reported per 10 units (years or mg as applicable).