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. 2012 Apr 30;12:158. doi: 10.1186/1471-2407-12-158

Table 3.

Patient and tumour characteristics of pT1a-pT1b tumours vs other stage I-II tumours in the NEMESI study

  Pathological stage I-II (pT1a, pT1b excluded) pT1a, pT1b
N. of patients
1492
402
Distribution by age
 
 
18–34
23 (1.5%)
7 (1.7%)
35–49
384 (25.7%)
85 (21.1%)
50–69
754 (50.5%)
230 (57.2%)
≥ 70
331 (22.2%)
80 (19.9%)
Menopausal status
 
 
Pre-
465 (31.2%)
101 (25.1%)
Post-
1,014 (68.0%)
293 (72.8%)
Unknown
13 (0.9%)
8 (2.0%)
Node sentinel biopsy
 
 
Yes
903 (60.5%)
319 (79.3%)
No
589 (39.5%)
83 (20.7%)
Axillary nodal dissection
 
 
Yes
941 (63.1%)
137 (34.1%)
No
551 (36.9%)
265 (65.9%)
Grading
 
 
G1
120 (8.0%)
101 (25.1%)
G2
741 (48.7%)
221 (55.0%)
G3
589 (39.5%)
72 (17.9%)
Unknown
42 (2.8%)
8 (2.0%)
Proliferation index (Ki-67/MB1)
 
 
0–18%
707 (47.4%)
283 (70.6%)
19–29%
279 (18.7%)
52 (12.9%)
≥ 30%
461 (30.9%)
54 (13.4%)
Unknown
45 (3.0%)
13 (3.2%)
ER status
 
 
ER positive (≥ 10%)
1,215 (81.4%)
351 (87.3%)
ER negative (0–9%)
276 (18.5%)
51 (12.7%)
Unknown
1 (0.1%)
0 (0.0%)
PgR status
 
 
PgR positive (≥ 10%)
1,038 (69.6%)
300 (74.6%)
PgR negative (0–9%)
449 (30.1%)
101 (25.4%)
Unknown
5 (0.3%)
0 (0.0%)
Hormonal status*
 
 
ER and/or PgR positive
1,228 (82.3%)
354 (88.1%)
ER and PgR negative
263 (17.6%)
48 (11.9%)
Unknown
1 (0.1%)
0 (0.0%)
HER2 status**
 
 
Positive
279 (18.7%)
49 (12.2%)
Negative
1,185 (79.4%)
344 (85.6%)
Missing
28 (1.9%)
9 (2.2%)
pN status
 
 
pN0
836 (56.0%)
319 (79.4%)
pN1 (1–3)
477 (32.0%)
74 (18.4%)
pN2 (4–9)
113 (7.6%)
6 (1.5%)
pN3 (≥ 10) 66 (4.4%) 3 (0.7%)

* cut off: 10%

** HER2 status positive if: IHC 3+; or IHC 2+ and amplified by FISH,SISH,CISH; or amplified by FISH,SISH,CISH