Table 3.

Results using multivariable model 1

Outcome measure	OR (95% CI)	p Value	Goodness-of-fit (AIC)
Original analysis
Labelling errors (including EPSR2-specific labelling errors)	1.46 (1.21 to 1.76)	<0.001	6485.15
Content error	1.16 (0.77 to 1.75)	0.467	2279.97
Enhancement	1.02 (0.90 to 1.16)	0.739	12600.59
Sensitivity analysis with 158 cases of missing indication recoded as not being in error
Labelling errors (including EPSR2-specific labelling errors)	1.04 (0.84 to 1.29)	0.720	5817.54

AIC, Akaike information criterion; EPSR2, Electronic Prescription Service Release 2.