Table 3

Comparing AMH error and AMO error rates across study arms

Result	Usual care minus pharmacist (n=95, 94)			Pharmacist minus pharmacist-supervised pharmacy technician (n=94, 89)			Usual care minus pharmacist-supervised pharmacy technician (n=95, 89)
Mean AMH error outcomes	Δ	pSD	C	Δ	pSD	C	Δ	pSD	C
AMH errors per patient	6.6*	4.2	1.6	−0.08	2.0	−0.04	6.5*	4.2	1.5
AMH errors per patient, severe or life threatening only	3.8*	2.9	1.4	0.04	1.5	0.03	3.8*	2.8	1.4
AMH error score per patient†	18.8*	12.4	1.5	0.05	6.8	0.01	18.9*	12.4	1.5
Mean AMO error outcomes
AMO errors per patient	2.5*	2.2	1.2	−0.002	1.1	−0.002	2.5*	2.2	1.2
AMO errors per patient, severe or life threatening only	0.92*	1.2	0.76	0.10	0.55	0.17	1.0*	1.2	0.85
AMO error score per patient	5.4*	5.5	0.99	0.29	2.7	0.11	5.7*	5.4	1.1

*p<0.0001 (pairwise comparison with Tukey-Kramer adjustment for multiple testing).
†Primary outcome.
Δ, difference in means; AMH, admission medication history; AMO, admission medication order; C, Cohen’s d calculated as difference in means divided by pooled SD of the two groups; pSD, pooled SD.