Table 4.
Regression model showing the association between GAD-7 and other psychiatric conditions
| Dependent variable | |||||
|---|---|---|---|---|---|
| PHQ-9 | HCL-32 | SPQB | AUDIT | ISI | |
| β (t) | β (t) | β (t) | β (t) | β (t) | |
| Independent variable | |||||
| GAD-7 | 0.737 (61.659)*** | 0.109 (6.109)*** | 0.414 (25.409)*** | 0.061 (3.471)*** | 0.029 (1.639) |
| Control variables | |||||
| Female (ref.: male) | −0.009 (−0.727) | −0.065 (−3.721)*** | −0.069 (−4.338)*** | −0.125 (−7.318)*** | −0.015 (−0.832) |
| Agea | −0.035 (−2.549)* | 0.107 (5.242***) | −0.004 (−0.210) | 0.211 (10.560)*** | −0.036 (−1.761) |
| Student (ref.: non-student) | 0.004 (0.290) | 0.033 (1.603) | −0.004 (−0.210) | 0.003 (0.132) | −0.009 (−0.451) |
| Had psychiatric history (ref.: no history) | 0.056 (4.685)*** | −0.047 (−2.683)** | 0.052 (3.195)** | 0.011 (0.637) | 0.012 (0.667) |
| R2 | 0.560*** | 0.024*** | 0.182*** | 0.062*** | 0.003 |
β = Standardised regression coefficient, t = t-test value, ref. = Referent of a binary variable, aThe age variable was put into the regression model as an ordinal variable. Therefore the value of the regression coefficients indicate the points the dependent variable increase (or decrease) as the age group changes from a young group to an older group. ***p < .001, **p <.01, *p < .05