Table 3.

Paired Samples t-test Results for Safety Climate Items across Hospitals A and B

	2004 % Positive	2005 % Positive	Mean Difference	SD	t	df	Significance (2 Tailed)
I am encouraged by my colleagues to report any patient safety concerns I may have
Hospital A	81.23	88.04	−6.81	7.85	−2.60	8	.032
Hospital B	67.85	80.62	−12.77	12.18	−3.63	11	.004
The culture in this clinical area makes it easy to learn from the errors of others
Hospital A	64.38	78.98	−14.59	16.76	−2.61	8	.031
Hospital B	50.32	60.06	−9.75	17.11	−1.97	11	.074
In this clinical area, it is difficult to discuss errors (note % positive here is the % disagree due to negative wording)
Hospital A	58.95	68.58	−9.63	14.81	−1.95	8	.087
Hospital B	41.88	52.08	−10.20	12.89	−2.74	11	.019
I know the proper channels to direct questions regarding patient safety in this clinical area
Hospital A	81.22	90.04	−8.82	9.16	−2.89	8	.020
Hospital B	74.38	84.59	−10.20	8.61	−4.11	11	.002
I would feel safe being treated here as a patient
Hospital A	92.35	92.95	−0.60	8.79	−0.20	8	.843
Hospital B	71.83	72.55	−0.72	15.27	−0.16	11	.873
Medical errors are handled appropriately in this clinical area
Hospital A	87.54	92.43	−4.89	6.97	−2.10	8	.069
Hospital B	73.48	80.30	−6.81	20.44	−1.16	11	.273
I receive appropriate feedback about my performance
Hospital A	64.03	74.13	−10.10	19.27	−1.57	8	.155
Hospital B	58.25	58.93	−0.68	15.23	−0.15	11	.880