Table 4.

Association of ADE from a medication discrepancy with 3 prescribing indices: number of medications prescribed prior to transfer, number of medication discrepancies that occurred after transfer, and number of high-risk medication discrepancies that occurred after transfer.

Index:	Pre-Transfer Medications		Medication Discrepancies		High-Risk Discrepancies
Quartile of index:	Range in quartile:	Percent in quartile with ADE:	Range in quartile:	Percent in quartile with ADE:	Range in quartile:	Percent in quartile with ADE:
1	0–3	15	0	14	0	13
2	4–5	13	1	17	1	22
3	6–7	27	2–3	19	2	24
4	≥8	24	≥4	32	≥3	47
Unadjusted odds ratio (95% CI); C-statistic*	1.08 (.98–1.19); .578		1.19 (1.05–1.36); .600		1.65 (1.26–2.16); .621
Adjusted** odds ratio (95% CI); C-statistic*	1.07 (.97–1.19); .637		1.20 (1.02–1.41); .666		1.71 (1.28–2.28); .691

^*Odds ratio indicates the additional risk of ADE with a 1-point increase in each prescribing index; c-statistic indicates the area under the receiver operating characteristic (ROC) curve

^**Adjusted for gender, age, comorbidity score, APACHE score, off-hours admission, and duration of follow-up