Table 1. Comparison of 8E AJCC prognostic groups to other proposed classification schemes.

Stage	8E AJCC (8)	Shao et al. proposed staging (7)	Yu et al. proposed staging (9)	Integrated proposed staging
I	T1N0M0	Ia: T1N0M0	T1N0M0	T1N0M0
		Ib: T2N0M0
II	T2N0M0	T3N0M0	T2N0M0	T2N0M0
III	T1-2N1M0, T3NanyM0	T1-3N1M0, T4N0M0	T3N0M0	T3N0M0
IV	T4NanyM0, TanyNanyM1	T4N1M0, TanyNanyM1	T1-3N1M0, T4NanyM0, TanyNanyM1	IVa: T3N1M0, T3N0M1, T4N0M0
				IVb: T4N1M0, T4N0M1, T4N1M1