Table 4.

Hierarchical Regression Model for Frequency of Events Reported (Composite, Near-Miss, No Potential for Harm, and Potential for Harm Events).

Parameters	Composite		Near-Miss		No Potential for Harm		Potential for Harm
Fixed effects
Level-1 – Work Area/Unit	B	t	B	t	B	t	B	t
Communication openness	0.02	0.79	−0.02	−0.80	0.02	0.71	0.07	2.86b
Feedback about error	0.37	17.49c	0.44	17.60c	0.36	14.32c	0.31	14.31c
Nonpunitive response to error	0.06	3.74c	0.04	2.40a	0.06	3.76c	0.06	3.92c
Organizational learning	0.24	9.03c	0.23	7.41c	0.29	9.60c	0.20	7.56c
Staffing	0.01	1.11	0.01	0.41	−0.01	−0.65	0.04	2.90b
Manager expectations for safety	0.00	0.15	0.01	0.26	−0.02	−0.92	0.02	0.82
Teamwork within units	0.04	2.22a	0.04	1.97a	0.05	2.35a	0.03	1.70
Level-2 – Hospital
Handoffs and transitions	0.12	2.42a	0.03	0.44	0.15	2.58b	0.21	4.16c
Management support for safety	0.37	9.41c	0.43	9.77c	0.38	8.48c	0.29	7.39c
Teamwork across units	0.46	0.80	0.10	1.39	0.02	0.24	0.00	0.01

Abbreviations: B, unstandardized coefficient; t, t-ratio

^ap < .05

^bp < .01

^cp < .001