Table 3.
Regression analysis of variable relationships in the chained mediation model
| Regression equation (n = 3599) | Overall fit index | Significance of regression coefficients | 95 per cent confidence interval | ||||
|---|---|---|---|---|---|---|---|
| outcome variable | predictor variable | R2 | F | β | t | LLCI | ULCI |
| Bedtime procrastination | Mobile phone addiction | 0.002 | 3.919 | 0.006 | -2.79 | − 0.010 | − 0.002 |
| Gender | 0.0208 | 0.309 | -1111 | 0153 | |||
| Physical exercise | Mobile phone addiction | 0.201 | 450.126 | -0.545 | -29.992 | − 0.581 | − 0.510 |
| Gender | -1.057 | -1.765 | -2.230 | 0.117 | |||
| Anxiety | Mobile phone addiction | 0.338 | 610.348 | 0.098 | 20.273 | 0.089 | 0.1079 |
| Physical exercise | − 0.096 | -24.107 | − 0.1037 | − 0.0081 | |||
| Gender | − 0.395 | -2.762 | − 0.6749 | − 0.1145 | |||
| Bedtime procrastination | Mobile phone addiction | 0.347 | 477.144 | − 0.050 | -25.667 | − 0.054 | − 0.046 |
| Physical exercise | − 0.046 | -28.259 | − 0.049 | − 0.043 | |||
| Anxiety | 0.128 | 20.206 | 0.116 | 0.141 | |||
| Gender | 0.009 | 0.177 | − 0.097 | 0.117 | |||