Dimensions of the safety culture	The safety culture dimensions as covariate (Included one at a time)				The four strongest predictors of the incident culture as covariates (Included simultaneously) (n = 583)
Dimensions of the safety culture	n	Regressions coefficient B	95% CI	p-value	Regressions coefficient B	95% CI	p-value
Communication openness	589	0.470	0.398 to 0.543	<0.001	0.330	0.248 to 0.412	<0.001
Manager expectations and actions promoting safety	589	0.378	0.304 to 0.453	<0.001	0.109	0.024 to 0.194	0.012
Organisational learning and continuous improvement	586	0.374	0.293 to 0.455	<0.001	0.164	0.081 to 0.248	<0.001
Teamwork across hospital units	586	0.360	0.261 to 0.459	<0.001	0.150	0.055 to 0.245	0.002
Teamwork within hospital units	589	0.288	0.196 to 0.380	<0.001
Hospital management support for patient safety	577	0.249	0.174 to 0.324	<0.001
Non-punitive response to error	589	0.219	0.137 to 0.301	<0.001
Hospital handoffs and transitions	581	0.173	0.078 to 0.268	<0.001
Staffing	589	0.142	0.051 to 0.232	0.002