Table 1

Means, SDs and correlations of before-after intervention variables

Variables	1	2	3	1	2	3
1. Teamwork	(0.83)	0.45**	0.43**	(0.81)	0.61**	0.48**
2. Safety Climate	0.54**	(0.78)	0.58**	0.63**	(0.77)	0.57**
3. Leadership	0.53**	0.67**	(0.94)	0.51**	0.67**	(0.93)
Mean	2.99	2.64	2.94	3.03	2.67	3.17
SD	0.56	0.52	0.91	0.55	0.51	0.78
Mean T1	3.04	2.68	3.10	2.90	2.59	3.02
Mean T2	2.93	2.59	2.77	3.14	2.75	3.31
SD T1	0.52	0.50	0.80	0.55	0.50	0.83
SD T2	0.60	0.55	0.99	0.51	0.51	0.71

T1 (before intervention) data are above diagonal; T2 (after intervention) data are below diagonal. Experimental group n=141; control group n=144. Cronbach's α is reported in parentheses.
**p<0.01.