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Table 1 Patient characteristics

From: Optical tissue measurements of invasive carcinoma and ductal carcinoma in situ for surgical guidance

Age
 Mean 56.3 years
 Standard deviation 11.5 years
Menopausal status
 Premenopausal 33 patients (30.8%)
 Perimenopausal 10 patients (9.3%)
 Postmenopausal 58 patients (54.2%)
 Unknown 6 patients (5.6%)
Preoperative treatment
 Chemotherapy 30 patients (28%)
 Hormonal therapy 14 patients (13.1%)