Table 2.

Relative risk of receiving a dosing alert at start of interventions versus later

DRC Audit Period	Early		Late		Relative Risk (RR)
	April – May 2006		October 2007 & 2008		Early vs. Late
	Alert	No Alert	Alert	No Alert	RR	95% CI	P
Ambulatory Clinics	854	2946	877	6782	1.63	1.54-1.72	<0.00001
Emergency Department	421	4807	258	8262	1.69	1.58-1.80	<0.00001
Inpatient Units	2447	16,111	1003	19,805	1.58	1.54-1.62	<0.00001
Post Operative Unit (PACU)	462	5788	155	7303	1.69	1.61-1.78	<0.00001
Pharmacy	3525	30,313	1202	43,308	1.81	1.78-1.85	<0.00001
Total all Prescriber alerts	4184	29,652	2293	42,152	2.40	2.28-2.52	<0.00001
Total all Prescriber and Pharmacy alerts	7709	59,965	3495	85,460	1.67	1.65-1.69	<0.00001

DRC = Dose Range Check alert, CI = confidence interval