Table 2. The 5-year estimated survivals among various subgroups.

5y LRFS	Rate (%)	5y RRFS	Rate (%)	5y DMFS	Rate (%)	5y DFS	Rate (%)
T1	91.1	N0	99.4	N0	91.5	I	90.9
T2	91.3	N1	96.4	N1	91.0	II	90.2
T3	89.7	N2	91.2	N2	78.6	III	72.5
T4	83.2	N3	86.8	N3	76.2	IVA/IVB	60.5/65.1
Overall	89.7	Overall	94.5	Overall	85.6	Overall	76.3
χ 2	3.821	χ 2	19.497	χ 2	27.258	χ 2	46.046
p value	0.281	p value	0.000	p value	0.000	p value	0.000