Table 3

Results of linear Regression Coefficients^a

Model

Unstandardized coefficients

Standardized coefficients

95% CI for B

B

Std. Error

Beta

t ¹

Sig.

Lower bound

Upper bound

(Constant)

20.83

4.55

4.58

< 0.0005

11.836

29.823

Age

-0.18

0.24

-0.06

-0.75

0.46

-0.65

0.29

Sex

-0.07

1.1

-0.01

-0.07

0.95

-2.12

2.27

Hours spent online daily

2.42

0.35

0.57

6.88

< 0.0005

1.72

3.11

Internet used for:

- less than 1 year

Ref

- 1 to 3 years

-3.49

1.77

-0.20

-1.97

0.051

-7

0.01

- 3 to 5 years

-2.66

1.71

-0.17

-1.55

0.12

-6.06

0.73

- 5 years or more

-2.56

2.00

-0.14

-1.28

0.20

-6.52

1.40

^aDependent variable: CIUS total score. The number of degrees of freedom (df) associated with the t-test is n - p - 1 = 143.

Khazaal et al. Substance Abuse Treatment, Prevention, and Policy 2011 6:32   doi:10.1186/1747-597X-6-32