From: Quality assessment of services provided by health centers in Mashhad, Iran: SERVQUAL versus HEALTHQUAL scales
Variation
Number
Percentage
Age
≤ 40
179
90
> 40
21
10
Sex
Men
19
9
Women
181
91
Marital status
Married
196
98
Single
4
2
Education level
University education
110
56
Non-university education
44