Table 2 Patient characteristics among AIS-low group vs. AIS-high group in the NCCTG-N9831 trial.
AIS-low (N = 647) | AIS-high (N = 621) | Total (N = 1268) | P valuea | |
|---|---|---|---|---|
Age (years) | 0.0099 | |||
Mean (±SD) | 49.3 (±10.6) | 50.8 (±10.6) | 50.0 (±10.6) | |
Median | 49.0 | 51.0 | 50.0 | |
Range | (22.0–80.0) | (23.0–77.0) | (22.0–80.0) | |
Tumor size (cm) | 0.0007 | |||
Mean (±SD) | 3.0 (±1.9) | 2.7 (±1.6) | 2.9 (±1.8) | |
Median | 2.5 | 2.4 | 2.5 | |
Range | (0.1–13.2) | (0.1–15.0) | (0.1–15.0) | |
Nodal status | 0.7410 | |||
N0 | 120 (18.5%) | 126 (20.3%) | 246 (19.4%) | |
N1 | 261 (40.3%) | 238 (38.3%) | 499 (39.4%) | |
N2 | 181 (28.0%) | 168 (27.1%) | 349 (27.5%) | |
N3 | 85 (13.1%) | 89 (14.3%) | 174 (13.7%) | |
Menopausal status | 0.1845 | |||
1 | 345 (53.3%) | 308 (49.6%) | 653 (51.5%) | |
2 | 302 (46.7%) | 313 (50.4%) | 615 (48.5%) | |
Tumor grade | 0.1374 | |||
Missing | 7 | 8 | 15 | |
Grade 2 | 189 (29.5%) | 158 (25.8%) | 347 (27.7%) | |
Grade 3 | 451 (70.5%) | 455 (74.2%) | 906 (72.3%) | |
ER/PR status | 0.0235 | |||
Negative | 285 (44.0%) | 313 (50.4%) | 598 (47.2%) | |
Positive | 362 (56.0%) | 308 (49.6%) | 670 (52.8%) | |
ARM | 0.7571 | |||
A | 233 (36.0%) | 212 (34.1%) | 445 (35.1%) | |
B | 224 (34.6%) | 225 (36.2%) | 449 (35.4%) | |
C | 190 (29.4%) | 184 (29.6%) | 374 (29.5%) |
