Table 6.
Relationship among independent variables (low frequency/high frequency, RR interval, and work vibration) and dependent variable (driving time).
| Independent variables | Dependent variable: driving time | ||||
|
|
Estimated | SE | t valuea | P value | VIFb |
| LFc/HFd | –24.5 | 7.32 | –3.34 | .002 | 1.40 |
| RRIe | –0.350 | 0.0814 | –4.30 | <.001 | 1.40 |
| MSDVzf | –10.7 | 3.07 | –3.49 | .001 | 1.44 |
| (Intercept) | 2115.6 | 420.0 | 5.04 | <.001 | —g |
| Multiple R2h | 0.490 | — | — | — | — |
| Adjusted R2 | 0.449 | — | — | — | — |
| F static valuei | 12.1 | — | — | <.001 | — |
at value: result of the student t test.
bVIF: variance inflation factor.
cLF: low frequency.
dHF: high frequency.
eRRI: RR interval.
fMSDVz: motion sickness dose value.
gNot available.
hR2: coefficient of determination.
iF static value: variance ratio.