Table 5 Results of the hierarchical regression analysis: validation of the mediating effect of risk perception
Variables | Step1 | Step2 | ||||
|---|---|---|---|---|---|---|
PH | RP | PH | ||||
Control variables | ||||||
 Gender | −0.206* | −0.121 | −0.094 | −0.106 | −0.206* | −0.157* |
 Age | 0.123 | 0.098 | 0.000 | −0.014 | 0.123 | 0.102 |
 Ethnic | −0.054 | −0.071 | 0.051 | 0.019 | −0.054 | −0.065 |
 Education | 0.178 | 0.098 | −0.093 | −0.105 | 0.178 | 0.121 |
 Income | 0.165 | 0.127 | −0.097 | −0.084 | 0.165 | 0.148 |
 Housing | −0.154 | −0.158* | 0.052 | 0.036 | −0.154 | −0.140 |
Independent variables | ||||||
 Exposure | −0.167*** | 0.298*** | −0.132** | |||
Mediating variables | ||||||
 RP | −0.331*** | |||||
 F | 1.764 | 95.671*** | 4.553*** | 91.352*** | 1.413 | 122.910*** |
 R2 | 0.005 | 0.135 | 0.049 | 0.161 | 0.005 | 0.301 |
 △R2 | 0.012 | 0.129*** | 0.057*** | 0.123*** | 0.015 | 0.164*** |