Characteristics

Frequency (%)

Significance

Gender

p = 0.918

Male

6.05 ± 2.76

Female

6.07 ± 2.46

Age groups

p = 0.744

18 - 30 years

6.24 ± 2.73

>30 - 40 years

6.04 ± 2.40

>40 - 50 years

5.84 ± 2.38

>50 - 60 years

6.15 ± 2.88

>60 years

5.83 ± 2.86

Residential areas

p = 0.420

Middle region

6.13 ± 2.68

Eastern region

6.28 ± 1.93

Western region

5.45 ± 2.37

South region

5.87 ± 2.60

Northern region

6.32 ± 2.57

Education levels

p < 0.001

Elementary education

7.80 ± 2.62

Intermediate education

4.89 ± 2.58

Secondary education

5.90 ± 2.41

University education

5.94 ± 2.52

Higher education

7.32 ± 2.79