Table 4.

Predictors of 30-day hospital readmissions with venous thromboembolic complications by multivariate analysis

Variables of Interest		Odds Ratio	95% Confidence Interval		p-value
Anatomic region	Cervical	0.796	0.736	0.861	<.0001
	Thoracolumbar	Reference
Age	45–59	1.078	0.96	1.211	0.2015
	60–74	1.393	1.233	1.574	<.0001
	>=75	1.631	1.408	1.89	<.0001
	18–44	Reference
Gender	Male	1.336	1.249	1.43	<.0001
	Female	Reference
Primary insurance	Medicare	0.905	0.77	1.063	0.2241
	Private insurance	0.928	0.797	1.081	0.3402
	Self-pay	0.941	0.674	1.315	0.7224
	No charge	1.558	0.844	2.875	0.1563
	Other	0.758	0.632	0.91	0.0029
	Medicaid	Reference
Discharge disposition	Short-term Hospital	2.174	1.565	3.019	<.0001
	Transfer Other	2.023	1.835	2.231	<.0001
	Home Health Care	1.227	1.117	1.348	<.0001
	Against Medical Advice	1.166	0.431	3.154	0.7626
	Routine	Reference
Medical	Yes	1.243	1.052	1.467	0.0105
complication	No	Reference
Neurological complication	Yes	1.347	1.146	1.584	0.0003
	No	Reference
Index length of stay	2 days	1.687	1.485	1.916	<.0001
	3–4 days	2.173	1.933	2.443	<.0001
	>=5 days	3.676	3.261	4.144	<.0001
	0–1days	Reference
Steroid use	Yes	1.582	1.22	2.052	0.0005
	No	Reference