Table 2.

Prevalence of prescribing problems at hospital discharge and their relationship with Type A ADRs in the subsequent 12 months (n = 359)

Prescribing problems	n	Per cent	Unadjusted odds ratio (95% CI)	Adjusted odd ratio (95% CI)a
Any dosage problem	148	41.2	0.89 (0.57–1.39)	0.72 (0.44–1.17)
Incorrect directions	159	44.3	0.85 (0.548–1.33)	0.72 (0.44–1.16)
Any drug–drug interaction	21	5.9	2.70 (1.11–6.55)	2.37 (0.91–6.11)
Any drug–disease interaction	48	13.4	2.09 (1.14–3.85)	1.93 (1.00–3.72)

^aControlling for basic activities of daily living score and self-rated health. Neither the number of high-risk medications nor the comorbidity index were retained in the backward selection (alpha = 0.15) multivariable logistic regression model. Hosmer–Lemeshow goodness-of-fit test (χ² = 7.05; df = 8; P = 0.53) suggests adequate model fit. No collinearity problems were detected with the final multivariable model.