Table 8 Moderated mediation analysis: indirect and direct effect comparison among the three grades
Grade | Estimate | Bootstrapping with 95% confidence | |||||
|---|---|---|---|---|---|---|---|
Bias-corrected | Percentile | ||||||
Lower | Upper | p value | Lower | Upper | p value | ||
Total indirect effect comparison | |||||||
G1–G2 | − .019 | − .355 | .256 | .861 | − .341 | .264 | .926 |
G1–G3 | − .154 | − .580 | .118 | .262 | − .536 | .145 | .350 |
G3–G2 | .135 | − .210 | .579 | .412 | − .234 | .539 | .473 |
SIE 1 comparison | |||||||
G1–G2 | − .084 | − .399 | .195 | .583 | − .414 | .183 | .529 |
G1–G3 | − .307* | − .706 | − .046 | .022 | − .658 | .017 | .036 |
G3–G2 | .223 | − .052 | .622 | .100 | − .107 | .540 | .174 |
SIE 2 comparison | |||||||
G1–G2 | − .081 | − .271 | .056 | .250 | − .268 | .059 | .272 |
G1–G3 | − .090 | − .286 | .042 | .194 | − .268 | .054 | .248 |
G3–G2 | .008 | − .191 | .212 | .909 | − .199 | .209 | .951 |
SIE 3 comparison | |||||||
G1–G2 | .147 | − .112 | .379 | .268 | − .077 | .407 | .182 |
G1–G3 | .242* | .018 | .482 | .038 | .003 | .471 | .047 |
G3–G2 | − .096 | − .341 | .119 | .304 | − .303 | .156 | .462 |
Direct effect comparison | |||||||
G1–G2 | − .005 | − .302 | .325 | .965 | − .303 | .321 | .976 |
G1–G3 | − .005 | − .291 | .313 | .959 | − .297 | .307 | .985 |
G3–G2 | .000 | − .327 | .324 | .996 | − .326 | .325 | .998 |