Table 8.
The mediation effect of NBSP for commuting time over 50 min increasing PB
| Dependent variable: PB | Mediating factor: NBSP | ||||||
|---|---|---|---|---|---|---|---|
| Independent variable | c | c’ | a | sa | b | sb | Z |
| Commuting time > 50 vs. others | 3.63* | 1.90 | 0.21** | 0.081 | 8.22*** | 0.445 | 2.57 |
*, P < 0.05; **, P < 0.001; ***, P <.0001; c, the linear regression coefficient of independent variable against dependent variable in absence of mediating factor; c,’ the linear regression coefficient of independent variable against dependent variable in presence of mediating factor; a, the linear regression coefficient of independent variable against mediating factor; b, the linear regression coefficient of mediating factor against dependent variable; sa; the standard errors of a; sa; the standard errors of b