Table IV.

Emerging correlations for pT1b cases

	pT1b	N0	N+	P-value
Cases	297 (72.4%)	243 (81.8%)	54 (18.2%)
Grade
G1	49 (16.5%)	41 (16.9%)	8 (14.8%)
G2	208 (70.0%)	173 (71.2%)	35 (64.8%)	NS
G3	40 (13.5%)	29 (11.9%)	11 (20.4%)
Ki-67
Low	205 (69.0%)	172 (70.8%)	33 (61.1%)	NS
High	92 (31.0%)	71 (29.2%)	21 (38.9%)
ER
Low	43 (14.5%)	34 (14.0%)	9 (16.7%)	NS
High	254 (85.5%)	209 (86.0%)	45 (83.3%)
PR
Low	70 (23.6%)	57 (23.5%)	13 (24.1%)	NS
High	227 (76.4%)	186 (76.5%)	41 (75.9%)
HER2
No-Ampl	262 (88.2%)	221 (90.9%)	41 (75.9%)	0.002
Ampl	35 (11.8%)	22 (9.1%)	13 (24.1%)

NS, no statistical significance.