TABLE 3.

Logistic regression analysis with the potential factors (N = 1942)

Potential factors	Univariate logistic regression			Multivariate logistic regression
	Unadjusted odds ratio	95% CI	p	Adjusted odds ratio	95% CI	p
Type of unit (reference: medicine unit)
Surgical unit	1.066	[0.822, 1.382]	.630	1.209	[0.894, 1.637]	.218
Obstetrics/gynaecology	1.615	[1.074, 2.429]	.021*	1.249	[0.777, 2.007]	.359
Paediatrics	0.827	[0.536, 1.278]	.393	0.856	[0.522, 1.404]	.539
Emergency room/outpatient unit	1.546	[1.098, 2.176]	.012*	1.065	[0.729, 1.569]	.751
Intensive care unit	1.246	[0.878, 1.768]	.218	1.124	[0.749, 1.686]	.573
OR/PACU	1.260	[0.866, 1.833]	.228	1.137	[0.738, 1.752]	.560
Other	0.874	[0.646, 1.182]	.381	1.001	[0.704, 1.424]	.995
Head nurse's caring (reference: low level ≤129)
129 < moderate level < 172	0.240	[0.179, 0.321]	.000***	0.400	[0.290, 0.553]	.000***
High level ≥172	0.050	[0.036, 0.069]	.000***	0.128	[0.087, 0.187]	.000***
Group behaviour (reference: low level ≤24)
24 < moderate level < 32	0.368	[0.280, 0.484]	.000***	0.601	[0.444, 0.814]	.001**
High level ≥32	0.087	[0.066, 0.114]	.000***	0.221	[0.160, 0.306]	.000***

Abbreviations: CI, confidence interval; OR, operation room; PACU, postanaesthesia care unit.

^* p < .05.

^** p < .01.

^*** p < .001.