Table 3

Sites and error rates pre- and post-intervention

Site	Descriptor	Number of patients		Total error per patient (median ( range))		Error rate per order per patient (%) (median (range))
Site	Descriptor	Pre	Post	Pre	Post	Pre	Post
1	>700 beds, tertiary teaching hospital, development site for medication chart	228	267	2 (0–20)	2 (0–13)	14.3 (0–125)	13.3 (0–175)
2	250 beds, district site, many IMG	133	136	2 (0–15)	2 (0–10)	20.6 (0–250)	15.4 (0–75)
3	140 beds, district site, mixture of local trained staff and IMG	110	90	2 (0–12)	2 (0–12)	18.5 (0–83)	16.7 (0–81)
4	350 beds, district site, mixture of local trained staff and IMG	163	141	2 (0–17)	1 (0–16)	20 (0–200)	20 (0–125)
5	Large >800-bed, tertiary teaching hospital	96	117	5 (0–19)	2 (0–17)	33 (0–157)	18.2 (0–180)
All	Representative mix of five sites	730	751	2 (0–20)	2 (0–17)	20 (0–250)	15.8 (0–180)
Kruskal–Wallis test of analysis of variance				p<0.001, NS if site 5 excluded	p = 0.025, NS if site 5 excluded	p<0.001, NS if site 5 excluded	NS difference
				p<0.001, NS if site 5 excluded	p = 0.025, NS if site 5 excluded	p<0.001, NS if site 5 excluded	NS difference