Factors influencing inpatient rehabilitation length of stay following revision hip replacements: a retrospective study

Table 3 Unadjusted relationship between Length of Stay (LOS) in days & all potential predictors

Continuous Variable		N	LOS		r	p-value
			Mean	SD
Age		275	30	16.4	.189	.002
Adm. Hemoglobin (g/l)		267	30	16.2	.108	.079
Days after THR on admission		275	30	16.4	.149	.013
Motor FIM on admission		261	30	16.7	-.440	<.001
Dichotomized Variables
Female sex	No	105	26	16.0		.001
	Yes	170	32	16.1
Had support	No	95	33	18.0		.005
	Yes	176	27	15.4
Environmental Barriers	No	128	31	16.8		.142
	Yes	139	28	16.2
Language Barrier	No	246	30	16.7		.844
	Yes	28	29	13.9
Redo revision (≥2)	No	155	27	13.9		<.001
	Yes	120	34	18.3
Had 2 or more prior L/Es surgeries	No	169	28	15.3		.026
	Yes	105	32	17.7
Had complication(s)	No	150	27	15.0		.011
	Yes	119	32	17.7
		N	LOS			p-value*
			Median	IQR
Had 2 or more comorbid conditions	No	105	23	17.5		.004
	Yes	164	30	24.0
Revised component
Acetabular only	No	161	29	22.0		.001
	Yes	77	21	15.5
Femoral only	No	178	26	19.0		.026
	Yes	60	33	24.8
Acetabular & Femoral	No	137	23	20.5		.186
	Yes	101	29	19.0
P/WBAT on admission	No	189	30	24.0		<.001
	Yes	85	21	15.5

*Significance of Non-parametric test
r, Pearson correlation; Adm., admission; THR, total Hip replacement; FIM, Functional Independence Measures; L/Es, lower extremities; P/WBAT; partial or weight bearing as tolerated

ISSN: 1471-2474