Table 3. Patient and disease characteristics of each treatment group.
Characteristics | Group 1 |
Group 2 |
P value | |||
---|---|---|---|---|---|---|
Number | % | Number | % | |||
Age | ||||||
17-<40 | 13 | 17 | 10 | 13 | 0.06 | |
40-49 | 41 | 52 | 45 | 55 | 0.07 | |
50-60 | 22 | 28 | 23 | 29 | 0.10 | |
61-65 | 2 | 3 | 2 | 3 | 0.09 | |
Mean age | 46 | – | 47 | – | 0.10 | |
Median age | 46 | – | 46 | – | 0.10 | |
Performance status (ECOG) | ||||||
0 | 50 | 64 | 48 | 60 | 0.07 | |
1 | 21 | 27 | 25 | 31 | 0.06 | |
2 | 7 | 9 | 7 | 9 | 0.09 | |
Performance status (median) | 0 | – | 0 | – | 0.10 | |
Pathological classification | ||||||
Ductal | 59 | 76 | 60 | 75 | 0.10 | |
Lobular | 19 | 24 | 20 | 25 | 0.10 | |
Other | 0 | – | 0 | – | – | |
Pathological grade | ||||||
1 | 2 | 3 | 2 | 2.5 | 0.08 | |
2 | 66 | 84 | 66 | 82 | 0.07 | |
3 | 10 | 13 | 12 | 15 | 0.08 | |
Grade median | 2 | – | 2 | – | 0.10 | |
Tumor stage | ||||||
pT0N1 | 0 | 0 | 0 | 0 | – | |
pT2N0 | 4 | 5 | 6 | 7 | 0.09 | |
pT1N1 | 9 | 12 | 5 | 6 | 0.05 | |
pT2N1 | 23 | 29 | 23 | 28 | 0.09 | |
pT3N1 | 4 | 5 | 7 | 8 | 0.07 | |
pT4N0-1 | 3 | 4 | 2 | 2 | 0.06 | |
pT1-3N2 | 28 | 36 | 29 | 36 | 0.10 | |
pT1-3N3 | 7 | 9 | 8 | 10 | 0.09 | |
Tumor stage median | pT2N2 | pT2N2 | 0.10 | |||
Surgery | ||||||
Modified radical mastectomy (MRM) | 60 | 77 | 60 | 75 | 0.09 | |
Breast conservative surgery (BCS) | 18 | 23 | 20 | 25 | 0.08 | |
Others | 0 | 0 | 0 | 0 | - | |
Other risk features | ||||||
Lymph node capsular invasion | ||||||
Absent | 70 | 89 | 71 | 89 | 0.10 | |
Present | 8 | 11 | 9 | 11 | 0.10 | |
Lymphovascular invasion | ||||||
Absent | 73 | 93 | 75 | 93 | 0.10 | |
Present | 5 | 7 | 5 | 7 | 0.10 | |
Perinural invasion | ||||||
Absent | 74 | 95 | 76 | 95 | 0.09 | |
Present | 4 | 5 | 4 | 5 | 0.10 | |
Extensive intraducatal component | ||||||
Absent | 68 | 87 | 69 | 86 | 0.09 | |
Present | 10 | 13 | 11 | 14 | 0.10 | |
Surgical margin: for BCS | ||||||
Negative | 13 | 72 | 15 | 75 | 0.08 | |
Positive | 5 | 28 | 5 | 25 | 0.10 | |
Post-operative radiotherapy | ||||||
Yes | 71 | 91 | 73 | 91 | 0.10 | |
No | 7 | 9 | 7 | 9 | 0.10 |