. Author manuscript; available in PMC: 2017 Mar 1.

Published in final edited form as: Eur J Cancer. 2016 Jan 19;56:21–30. doi: 10.1016/j.ejca.2015.11.023

Table 1.

Distribution of the selected baseline characteristics of the LIBCSP women diagnosed with breast cancer in 1996–1997 and with PCB measurements.

	n (%)
Age
<35–44	102 (16%)
45–54	160 (26%)
55–64	163 (26%)
65–74	152 (24%)
75+	50 (8%)
Income^a
<$15,000–$24,999	123 (20%)
$25,000–$49,999	186 (30%)
$50,000–$90,000+	316 (51%)
Education^a
<HS-HS graduate	275 (44%)
Some college/-College graduate	250 (40%)
Post college	99 (16%)
Parity/Lactation history
Nulliparous	66 (11%)
Parous/never lactated	347 (55%)
Parous/ever lactated	214 (34%)
Menopausal status^a
Pre-menopausal	210 (34%)
Post-menopausal	405 (66%)
Tumor characteristics^a
Invasive	447 (71%)
Tumor size (≥2cm)	99 (31%)
ER⁺ or PR⁺	272 (78%)
Treatment^a
Chemotherapy	158 (35%)
Radiation therapy	261 (58%)
Hormone therapy	244 (55%)

Long Island Breast Cancer Study Project (LIBCSP) participants diagnosed with breast cancer between August 1, 1996 and July 31, 1997 and followed-up through December 31, 2011.

Missing: income=2; education=3; menopausal status=12; tumor size=303; ER/PR status=276; chemotherapy=179; radiation therapy=178; hormone therapy=182