Table 4.

Zero‐inflated negative binomial regression models examining the association between the total number of prescribed preventative drugs at discharge and related factors

	UK (n = 125)
Indicator	IRR, 95% CI
Number of days admitted	0.99 (0.97, 1.01)
Total number of drugs at admission	0.95 (0.90, 1.01)
Total number of drugs at discharge	1.08 (1.03, 1.14)
Total number of preventative drugs at admission	1.27 (1.17, 1.39)

	US (n = 191)
Indicator	IRR, 95% CI
Palliative care consultation	0.73 (0.58, 0.92)
Total number of drugs at admission	0.95 (0.92, 0.97)
Hypertensive drugs at admission	1.33 (1.18, 1.50)
Total number of drugs at discharge	1.10 (1.08, 1.13)
Total number of preventative drugs at admission	1.13 (1.06, 1.20)
Antiplatelet drugs at admission	1.25 (1.00, 1.54)

CI, confidence interval; IRR, incidence rate ratio