Table 5 Coefficient estimates of Tobit and Two-part model using main effects with or without interaction terms
Variable | Tobit4 | Tobit5 | Two-part 4 | Two-part 5 | ||
|---|---|---|---|---|---|---|
First-part | Second-part | First-part | Second-part | |||
Constant | −0.60177*** | − 0.77881*** | 0.00048 | − 0.81605*** | 4.89e-06 | −1.02358*** |
FACT-B total score | ||||||
PWB | 0.04438*** | 0.05329*** | 0.62518** | 0.05972*** | 0.76743 | 0.06598*** |
EWB | 0.02293** | 0.01407 | ||||
FWB | 0.00821 | 0.01547 | 0.90802 | 0.02163*** | 0.89512 | 0.03590*** |
BCS | 0.02609*** | 0.03107*** | 1.55562 | 0.04312*** | 1.78533 | 0.04396*** |
Dimension squared | ||||||
PWB squared | −0.00062*** | − 0.00007 | 1.01569*** | − 0.00106*** | 1.01664*** | −0.00033 |
EWB squared | −0.00057* | − 0.00023 | ||||
FWB squared | −0.00003 | 0.00013 | 1.00524 | −0.00048*** | 1.00599* | −0.00019 |
BCS squared | −0.00032* | 0.00018 | 0.99500 | −0.00069*** | 0.99905 | −0.00015 |
Dimension interaction | ||||||
PWB × EWB | 0.00001 | |||||
PWB × FWB | −0.00013 | 1.00542 | −0.00059* | |||
PWB × BCS | −0.00114*** | 0.98847 | −0.00105*** | |||
EWB × FWB | −0.00010 | |||||
EWB × BCS | −0.00005 | |||||
FWB × BCS | −0.00032 | 0.99508 | −0.00042 | |||