Table 1.

Breast cancer risk factors among controls and invasive breast cancer cases, as defined by estrogen receptor status, among 4-Corners Hispanic and Non-Hispanic Women

CharacteristicNon-Hispanic White
Hispanic
Controls (n = 1,571)ER− breast cancer (n = 185)ER+ breast cancer (n = 736)Controls (n = 881)ER− breast cancer (n = 130)ER+ breast cancer (n = 336)
Family history, n (%)
    Yes230 (15)33 (18)169 (23)116 (13)29 (22)45 (14)
    No1,341 (85)152 (82)567 (77)765 (87)101 (78)291 (86)
Age in y, mean ± SD56.4 ± 12.252.2 ± 11.355.6 ± 10.754.5 ± 12.147.8 ±11.453.6 ± 10.8
Menopause, n (%)
    Premenopausal486 (31)78 (42)247 (34)316 (36)73 (56)124 (36)
    Postmenopausal1,085 (69)107 (58)489 (66)565 (64)57 (44)212 (64)
Number of live births,* mean ± SD2.4 ± 1.72.0 ± 1.42.1 ± 1.53.0 ± 2.12.7 ± 2.02.5 ± 1.8
Age at first birth in y,* mean ± SD24.1 ± 4.824.0 ± 5.424.3 ± 4.822.4 ± 4.522.4 ± 4.823.4 ± 5.4
Body mass index in kg/m2, mean ± SD27.0 ± 6.128.0 ± 6.126.9 ± 6.029.0 ± 6.226.8 ± 4.628.7 ± 5.9
Age at menarche in y, mean ± SD12.8 ± 1.612.4 ± 1.512.6 ± 1.612.8 ± 1.712.9 ± 1.612.7 ± 1.8
Progesterone receptor positive, n (%)13 (7)624 (85)18 (14)289 (86)
  • * Parous women only.

  • Missing progesterone receptor status (n = 7 NHW women).