Table 5. Correlation matrix between quality of healthcare services and other variables .

Variables	2	3	4	5	6	7	8	9
1. Expectation of service	0.14*	0.69	-0.02	-0.03	0.04	0.01	0.04	0.01
2. Service perception		0.16*	0.82**	-0.11	-0.02	0.19**	0.20**	0.22**
3. Nurse-physician communication			0.09	-0.06	0.1	0.56**	0.47**	0.78**
4. Safety culture				-0.01	0.18*	0.66**	0.50**	0.66**
5. Patient age					-0.001	-0.04	-0.06	-0.07
6. Hospitalization day						0.06	-0.01	0.08
7. Hospital stay							-0.03	-0.01
8. Nurses’ age								0.88**
9. Nurses’ experience in nursing

* P < 0.01, ** P < 0.001.