Table 1.

Analysis results of the MDA and NCDB cohorts.

$\widehat{\beta }$
	Trans-Cox	Cox(MDA)	Cox(NCDB)	Cox(Combined) †	Cox(Stratified)
Normalized Age	0.091	0.074	0.208	0.197	0.199
Grade:III vs I/II	0.616	0.388	0.347	0.353	0.348
Race:Black vs White	0.272	0.163	0.429	0.412	0.416
Race:Other vs White	−0.128	−0.336	−0.113	−0.107	−0.130
Stage:IIIC vs IIIB	−0.059	−0.243	0.386	0.368	0.357
Trimodality:Yes vs. No	−0.838	−1.174	−0.589	−0.636	−0.627
SE*
	Trans-Cox	Cox(MDA)	Cox(NCDB)	Cox(Combined)	Cox(Stratified)
Normalized Age	0.121	0.109	0.021	0.021	0.021
Grade:III vs I/II	0.197	0.269	0.044	0.043	0.044
Race:Black vs White	0.265	0.325	0.051	0.051	0.051
Race:Other vs White	0.261	0.295	0.118	0.109	0.109
Stage:IIIC vs IIIB	0.179	0.244	0.055	0.053	0.054
Trimodality:Yes vs No	0.207	0.230	0.069	0.065	0.065
p-value
$\widehat{\beta }$
	Trans-Cox	Cox(MDA)	Cox(NCDB)	Cox(Combined)	Cox(Stratified)
Normalized age	0.453	0.498	<0.001	<0.001	<0.001
Grade:III vs I/II	0.002	0.150	<0.001	<0.001	<0.001
Race:Black vs White	0.305	0.616	<0.001	<0.001	<0.001
Race:Other vs White	0.623	0.295	0.118	0.109	0.19
Stage:IIIC vs IIIB	0.753	0.318	<0.001	<0.001	<0.001
Trimodality:Yes vs No	<0.001	<0.001	<0.001	<0.001	<0.001

^*Boostrap-based standard error estimation with 1000 bootstrap resamplings.

^†Cox(Combined) is the Cox regression model using the combined data of MDA and NCDB.