Table 4:

Medical Errors and Adverse Events by Intervention versus Control Group

Event Type	Intervention		Control		Difference
	# of Events	Incidence Rate (# of Events/ 1000 Patient Days) (95% CI)	# of Events	Incidence Rate (# of Events/ 1000 Patient Days) (95% CI)	Incidence Rate Ratio (95% CI)
Overall Medical Errors	28	21.8 (15.1 – 31.6)	33	33.3 (23.6 – 46.8)	0.66 (0.40 – 1.09)
Non-Harmful Errors	17	13.3 (8.2 – 21.3)	23	23.2 (15.4 – 34.9)	0.57 (0.30 – 1.07)
Harmful Errors	11	8.6 (4.8 – 15.5)	10	10.1 (5.4 – 18.7)	0.85 (0.36 – 2.00)
Non-Preventable Adverse Events	8	6.2 (3.1 – 12.5)	7	7.0 (3.4 – 14.8)	0.88 (0.32 – 2.44)