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. 2015 Mar 29;15:201. doi: 10.1186/s12885-015-1207-z

Table 1.

Clinicopathologic characteristics of patients according to age

Age <40y 40 ~ 50y P value
character No. % No. %
T stage <0.01
T1 520 38.2 1072 34.5
T2 625 46.0 1914 56.3
T3 215 15.8 124 9.2
N stage 0.07
N0 626 46.0 1580 50.8
N1 324 23.8 787 25.3
N2 324 23.8 606 19.5
N3 86 6.4 137 4.4
Family history <0.01
Yes 80 5.9 44 1.4
No 1280 94.1 3066 98.6
Tumor Grade <0.01
Grade I 56 4.1 93 3.0
Grade II 775 57 2233 71.8
Grade III 529 38.9 784 25.2
Tumor type 0.4
IDC 1216 89.4 2762 88.8
ILC 60 4.4 168 5.4
Others 84 6.2 180 5.8
LVI <0.01
Positive 413 30.4 790 25.4
Negative 947 69.6 2320 74.6
ER status <0.01
Positive 821 60.4 2133 68.6
Negative 539 39.6 977 31.4
PR status 0.9
Positive 826 60.7 1894 60.9
Negative 534 39.3 1216 39.1
HER2 status 0.01
Positive 390 28.7 647 20.8
Negative 970 71.3 2463 79.2
Subtype <0.01
Luminal A 660 48.5 1959 59.2
Luminal B 344 25.3 579 17.5
Her2 positive 129 9.5 327 9.9
Triple negative 227 16.7 445 13.4
Srugery <0.01
BCS 223 16.4 236 7.6
Mastectomy 1137 83.6 2874 92.4
Endocrine therapy 0.7
No 204 15.0 442 14.2
Yes 1156 85 2668 85.8
Chemotherapy 0.4
No 92 6.8 308 9.9
Yes 1268 93.2 2802 90.1
Radiotherapy 0.1
No 1020 75.0 2568 82.6
Yes 340 25.0 542 17.4

Abbreviation:

IDC intraductal carcinoma.

ILC intralobular carcinoma.

LVI  lymphovascular invasion.

ER eostregen receptor.

PR progesterone receptor.

BCS breast conservative surgery.