Table 4.

Adjusted Trends in Odds for In-Hospital Venous Thromboembolism and Hemorrhage

	Secular trend in in-hospital events, months prior to order set, 7/2005–8/2006	Change at implementation of order set (omitting secular trends)	Secular trend in in-hospital events, months following order set, 8/2006–12/2008
	AOR-M (95% CI)	AOR (95% CI)	AOR-M (95% CI)
In-hospital VTE	0.98 (0.89–1.08)	0.52 (0.17–1.63)	1.04† (1.00–1.07)
In-hospital hemorrhage	0.98 (0.87–1.11)	0.82 (0.31–3.52)	1.05* (1.02–1.07)

VTE = Venous thromboembolism. AOR-M = adjusted odds ratio per month. AOR = adjusted odds ratio

Adjusted for age, sex, race, ethnicity, admitting service, admission source, insurance, and selected Elixhauser comorbidity measures (for VTE: diabetes, diabetes with complications, liver disease, peptic ulcer, coagulopathy, weight loss, and fluid and electrolyte disorders; for hemorrhage: arrhythmia, renal failure, peptic ulcer, coagulopathy, weight loss, chronic blood loss anemia, and deficiency anemias)

Odds ratios are in comparison to the baseline odds for each group

*p < 0.05

†p = 0.07