Table 4 The results of multiple regression analysis

1

(Constant)

1.01

1.01

0.99

.33

Perceived ease of use (H1)

0.71**

0.24

0.49

2.97

 < .01

1.00

Dependent variable: Perceived usefulness (R = 0.49; R² = 0.24; adjusted R² = 0.21; F = 8.82, p < .001)

2

(Constant)

0.96

0.64

1.45

.16

Perceived ease of use (H2)

0.26

0.17

0.22

1.53

.14

1.32

Perceived usefulness (H5)

0.51***

0.12

0.63

4.36

 < .001

1.33

Dependent variable: Attitude toward using (R = 0.76; R² = 0.58; adjusted R² = 0.54; F = 18.32, p < .001)

3

(Constant)

0.49

0.76

0.65

.52

Perceived ease of use (H3)

0.28

0.20

0.20

1.38

.18

1.33

Perceived usefulness (H6)

0.59***

0.14

0.63

4.26

 < .001

1.32

Dependent variable: User satisfaction (R = 0.75; R² = 0.56; adjusted R² = 0.52; F = 16.93, p < .001)

4

(Constant)

0.94

0.44

2.15

.04

Perceived usefulness (H4)

0.24

0.14

0.29

1.68

.11

2.85

Attitude toward using (H7)

0.69***

0.16

0.70

4.49

 < .001

2.29

User satisfaction (H8)

-0.12

0.13

-0.14

-0.88

.36

2.22

Dependent variable: Behavioral intention to use (R = 0.85; R² = 0.72; adjusted R² = 0.69; F = 22.48, p < .001)