Table 5.

Errors judged to be preventable with basic CDS

Type of error	Preventable prescribing errors	Preventable near misses
	N (%)	N (%)
Overall	17 605	82
Illegibility error	16 513 (93.8%)	38 (46.3%)
Strength error	330 (1.9%)	9 (11.0%)
Dose error	277 (1.6%)	7 (8.5%)
Frequency error	160 (0.9%)	19 (23.2%)
Amount to be dispensed error	132 (0.7%)	0
Directions error	112 (0.6%)	4 (4.9%)
Length of treatment error	81 (0.5%)	1 (1.2%)
Route error	0	2 (2.4%)
Date error	0	1 (1.2%)
Refill error	0	1 (1.2%)

CDS, clinical decision support.