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Table 1 Patient characteristics and event distribution in relation to patient, clinical, tumor and treatment factors

From: Separate and combined analysis of successive dependent outcomes after breast-conservation surgery: recurrence, metastases, second cancer and death

Characteristic No. of patients
Age, y  
   [29-39] 52 (5.7%)
   [40-49] 227(24.7%)
   [50-69] 512(55.7%)
   ≥ 70 128(13.9%)
Total 919
Histological size of the tumor (mm)  
   25th quartile 11.0
   Median 15.0
   75th quartile 20.0
   Range 1-45
Total 881
Extensive intraductal component (EIC)  
   -No 866 (94.2%)
   -Yes 53 (5.8%)
   Total 919
Grade  
   - Grade 1 324 (40.0%)
   - Grade 2 355 (43.8%)
   - Grade 3 131 (16.2%)
Total 810
# positive nodes  
   - 0 549 (62.8%)
   - 1-3 247 (28.3%)
   - ≥4 78 (8.9%)
Total 874
Lympho-vascular invasion  
   - No 667 (75.8%)
   - Yes 213 (24.2%)
Total 880
Surgical excision margin status  
   - Clear (ref) 549 (63.7%)
   - Invasion 313 (36.3%)
Total 862
Progesterone receptor status  
   - Positive 459 (55.0%)
   - Negative 376 (45.0%)
Total 835
Estrogen receptor status  
   - Positive 657 (21.5%)
   - Negative 180 (78.5%)
   Total 837
Treatment combination  
   - Radiotherapy 586 (63.8%)
   - Radio- and chemotherapy 129 (14.1%)
   - Radio- and hormonal therapy 183 (19.9%)
   - Radio- and chemo- and hormonal therapy 20 (2.2%)
   Total 918