Table 5.

Association Between Selected Variables and Unintended Discrepancies

		Mean No. of Unintended Discrepancies Per Patient
Characteristic	n	For Patients with Characteristic	For Patients Without Characteristic	Difference (95% CI)	p value
PharmaNet correct	8	2.25	0.38	1.88 (0.41 to 3.34)	0.021
Medication history correct	2	1.67	0	1.67 (−1.42 to 4.76)	0.27
Use of blister packs before admission	5	1.73	0.80	0.93 (−1.23 to 3.10)	0.38
Vials available	11	1.56	1.45	0.10 (−1.83 to 2.03)	0.91
History taken by medical student (v. medical resident)	8	1.75	1.13	0.63 (−1.05 to 2.30)	0.44
≥ 8 medications before admission	16	1.00	1.63	−0.63 (−3.00 to 1.75)	0.59
Weekend admission	9	0.82	2.33	−1.52 (−3.53 to 0.50)	0.13
Nighttime admission (after 8 PM)	9	1.00	2.11	−1.11 (−3.24 to 1.02)	0.27

CI = confidence interval.