Table 2.

Breast cancer characteristics and treatments used among study subjects

Characteristic	Cases n = 128	Controls n = 269	p-value
Breast cancer
Unilateral	97 (75.8 %)	214 (79.6 %)	0.39
Bilateral	31 (24.2 %)	55 (20.1 %)
Primary surgery
Lumpectomy	57 (44.9 %)	136 (51.3 %)
Unilateral mastectomy	69 (53.9 %)	125 (47.2 %)
Bilateral mastectomy	1 (0.8 %)	4 (1.5 %)	0.37
Chemotherapy
No	21 (16.5 %)	47 (17.6 %)
Yes	106 (83.5 %)	220 (82.4 %)	0.79
Radiotherapy
No	60 (47.2 %)	120 (45.1 %)
Yes	67 (52.8 %)	146 (54.9 %)	0.69
Tamoxifen
No	105 (83.3 %)	201 (75.3 %)
Yes	21 (16.7 %)	66 (24.7 %)	0.07