Table 7.
The final step in the hierarchical logistic regression analysis of predictors of current e-cigarette use in young people aged 11–16 years
| 95% C.I. for EXP(B) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Variables | B | S.E. | Wald | df | Sig. | Exp(B) | Lower | Upper |
| Female | −.222 | 1.166 | .036 | 1 | .849 | .801 | .081 | 7.875 |
| Male | −.181 | 1.165 | .024 | 1 | .877 | .834 | .085 | 8.187 |
| Other | −2.259 | 1.647 | 1.881 | 1 | .170 | .104 | .004 | 2.637 |
| Year 8 (11–12 yrs) | −.245 | 1.019 | .058 | 1 | .810 | .783 | .106 | 5.767 |
| Year 9 (12-13 yrs) | −.621 | .588 | 1.113 | 1 | .291 | .538 | .170 | 1.703 |
| Year 10 (13–14 yrs) | 1.247 | .664 | 3.526 | 1 | .060 | 3.480 | .947 | 12.787 |
| Year 11 (14–15 yrs) | −.248 | .595 | .174 | 1 | .677 | .780 | .243 | 2.506 |
| School type | .520 | .475 | 1.195 | 1 | .274 | 1.681 | .662 | 4.270 |
| Mother’s/female guardian EC use | .299 | .596 | .252 | 1 | .616 | 1.348 | .419 | 4.337 |
| Fathers/male guardian EC use | −1.042 | .573 | 3.310 | 1 | .069 | .353 | .115 | 1.084 |
| EC Knowledge | −.032 | .199 | .025 | 1 | .873 | .969 | .656 | 1.431 |
| SN | −.177 | .404 | .192 | 1 | .661 | .838 | .380 | 1.849 |
| Attitude | .767 | .400 | 3.678 | 1 | .055 | 2.153 | .983 | 4.714 |
| PBC | .009 | .339 | .001 | 1 | .978 | 1.010 | .520 | 1.961 |
| Self-efficacy | .908 | .378 | 5.784 | 1 | .016 | 2.481 | 1.183 | 5.201 |
| Intention | 1.610 | .288 | 31.22 | 1 | .000 | 5.004 | 2.844 | 8.802 |
| Indirect measure of attitude | .001 | .015 | .009 | 1 | .925 | 1.001 | .973 | 1.031 |
| Indirect SN | .029 | .016 | 3.167 | 1 | .075 | 1.029 | .997 | 1.062 |
| Indirect PBC | −.049 | .040 | 1.461 | 1 | .227 | .952 | .880 | 1.031 |
| Constant | −8.127 | 3.966 | 4.199 | 1 | .040 | .000 | ||
N 1511, School type = Grammar / Secondary School, EC Electronic cigarettes, PBC Perceived behavioural control, SN Subjective norm