TABLE 3.

Internal consistencies, means, standard deviations, correlations between study variables, and intra-class coefficients (ICCs).

	Cronbach’s alpha	Mean (sd)	Range	1	2	3	4	5	6	7	ICC
Job demands
1. Emotional demands	0.79	3.1 (0.7)	1–4	1	0.42	–0.15	–0.16	0.3	–0.17	–0.21	0.14
2. Effort	0.68	16.2 (3.9)	5–25	0.34***	1	–0.30	–0.54*	0.67**	–0.45	–0.32	0.11
Job resources
3. Reward	0.84	40.1 (9.1)	15–55	–0.25***	–0.45***	1	0.46*	–0.52*	0.71**	0.66**	0.09
4. Physical work environment	0.76	2.4 (0.6)	1–4.2	–0.25***	–0.34***	0.32***	1	–0.64*	0.83***	0.63**	0.22
Psychological health
5. Burnout	0.63	54.6 (14.9)	20.8–87.5	0.34***	0.51***	–0.37***	–0.27	1	–0.68**	–0.49*	0.07
Occupational health
6. Job satisfaction	0.79	21.0 (5.9)	6–32	–0.25***	–0.41***	0.49***	0.44***	–0.49***	1	0.71***	0.21
7. Psychological safety climate	0.84	8.9 (3.5)	4–20	–0.15*	–0.30***	0.45***	0.37***	–0.27***	0.45***	1	0.16

Correlations above the diagonal refer to the group-level data (level 2: hospital ward level); correlations below the diagonal refer to the individual-level data (level 1).

p-values: *< 0.05, **< 0.01, ***< 0.001.