Medication errors: a prospective cohort study of hand-written and computerised physician order entry in the intensive care unit

Table 3 Error outcome category analysis

Error category	None	Minor	Moderate/major	Total
Non-intercepted errors^a
HWP	993 (95.9%)	43 (4.2%)	0 (0%)	1036
CPOE	2332 (96.0%)	93 (3.8%)	4 (0.2%)	2429
Non-intercepted plus intercepted errors^b
HWP	967 (93.3%)	50 (4.8%)	19 (1.8%)	1036
CPOE	2312 (95.2%)	95 (3.9%)	22 (0.9%)	2429

^aNo significant difference with regard to errors between hand-written prescribing (HWP) and computerised physician order entry (CPOE; p = 0.51).
^bIf we include intercepted errors, there was a significant difference (p = 0.01) due to increased error rate with HWP.

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