Table 2 Relationship between estimated cost and selected independent variables

Sex

−1.65

3.88

−0.43

0.672

−9.38

6.08

EduStatus

 Basic Edu.

5.65

4.02

1.40

0.165

−2.38

13.67

 Secondary Edu.

1.85

4.28

0.43

0.667

−6.68

10.38

 Higher Edu.

−2.92

5.79

−0.5

0.616

−14.47

8.63

Age

0.43

0.10

4.03

0.000^a

−0.65

0.22

Income

0.01

0.00

2.45

0.017^a

0.00

0.020

DrugType

 Cusimolol

1.22

7.86

0.16

0.877

−14.44

16.88

 Optimol

4.43

6.62

0.67

0.505

−8.76

17.62

 Xalatan

12.02

5.64

2.13

0.036^a

0.78

23.26

 Prostan

7.21

5.68

1.27

0.209

−4.13

18.54

 Others

3.74

4.12

0.91

0.367

−4.47

11.96

_cons

32.12

12.73

2.52

0.014

6.74

57.49