Table 2.

Errors observed during simulation study, categorised by potential severity and error type

Error code*	Error type	Current guidelines (control) (n=133 simulations)				User-tested guidelines (n=140 simulations)
		Minor	Moderate	Severe	Total	Minor	Moderate	Severe	Total
	Number of IMG-related errors
I1	Wrong reconstituting fluid	0	0	0	0	0	0	0	0
I2	Wrong reconstituting fluid volume	1	0	0	1	0	0	0	0
I3	Dose discrepancy	13	16	0	29	4	6	0	10
I4	Wrong diluent	0	0	0	0	0	1	0	1
I5	Wrong diluent volume	0	6	0	6	0	0	0	0
I6	Incorrect technique (IMG related)	1	55	0	56	6	58	0	64
I7	Wrong route	0	0	0	0	0	0	0	0
I8	Flush error	0	12	0	12	0	12	0	12
I9	Rate discrepancy	10	30	0	40	1	12	0	13
I10	Infusion expiry error	0	0	0	0	0	0	0	0
I11	Other IMG-related error†	23	4	5	32	1	2	1	4
	Total IMG-related errors	48	123	5	176	12	91	1	104
	Number of non-IMG-related errors
N1	Wrong medication	0	5	0	5	0	6	0	6
N2	Incorrect technique (non-IMG related)	64	34	0	98	69	52	0	121
N3	Non-aseptic technique	264	194	0	458	289	220	0	509
N4	Expired ingredient	0	5	0	5	0	2	0	2
N5	Other non-IMG-related error	10	0	0	10	9	1	0	10
	Total non-IMG-related errors	338	238	0	576	367	281	0	648

*Error codes cross-reference to the observation recording forms shown in online supplementary file 2 and online supplementary file 3, table 4.

†Other IMG-related errors consisted of participants who were not confident to finish the simulation without assistance from a colleague and composite errors where a participant gave the dose as a short injection, so it was both undiluted and administered too quickly.

IMG, Injectable Medicines Guide.