Skip to main content
. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Breast J. 2012 Sep;18(5):504–505. doi: 10.1111/j.1524-4741.2012.01294.x

Table 1.

Characteristics of participants by NAF producer status, N= 310

Non-producer Producer


NAF volume at screening 0 µL Any NAF p value ≥10 µL NAF p value
N (%) 162 (52.3) 148 (47.7) 112 (40.9)
Age (years) 37.0±8.1 40.2±6.4 <0.001 39.9±6.6 <0.01
Age at menarche (years) 12.7±1.6 12.5±1.5 0.40 12.5±1.5 0.30
Parity, N (%) Yes 85 (52.5) 100 (67.6) <0.01 77 (68.7) <0.01
No 77 (47.5) 48 (32.4) --- 35 (31.3) ---
Age at first live birth (years) 26.7±5.3 27.4±6.6 0.41 27.2±6.8 0.54
Body mass index (kg/m2) 25.2±5.7 26.4±6.2 0.07 26.3±5.9 0.13
Ethnicity, N (%) Caucasian 42 (45.2) 51 (54.8) 0.06 44 (47.3) <0.01
Asian American 77 (60.2) 51 (39.8) --- 33 (25.8) ---
Other 43 (48.3) 46 (51.7) --- 35 (39.3) ---
Soy intake (servings per week)* Early life (<20 years) 1.4±2.3 1.5±3.1 0.88 1.3±3.0 0.71
Adult life (≥20 years) 3.2±4.7 3.6±4.5 0.43 3.7±4.7 0.36
Lifetime 2.1±2.5 2.4±3.2 0.31 2.4±3.2 0.42
*

N=308 for adult life (2 women are <20 years old)