Age at mammogram (years) |
43.1 ± 2.3 |
Race/ethnicity |
Non-hispanic white |
546 (78.2) |
African-American |
86 (12.3) |
Hispanic |
40 (5.7) |
Asian/pacific-islander/other |
26 (3.7) |
Maternal education |
Less than high school |
180 (25.9) |
High school graduate |
289 (41.6) |
Trade school or some college |
150 (21.6) |
College or higher education |
75 (10.8) |
Paternal education |
Less than high school |
176 (27.4) |
High school graduate |
246 (38.3) |
Trade school or some college |
120 (18.7) |
College or higher education |
101 (15.7) |
Childhood family income ($) |
< 5000 |
228 (35.4) |
5000- < 8000 |
292 (45.3) |
≥ 8000 |
125 (19.4) |
Prenatal tobacco smoke (PTS) exposure to maternal Smoking |
No |
406 (59.9) |
Yes |
272 (40.1) |
Birthweight (kg) |
3.4 ± 0.5 |
Weight at 4 years (kg) |
16.8 ± 2.4 |
Age at menarche (years) |
< 12 |
135 (19.4) |
12 |
192 (27.6) |
13 |
200 (28.7) |
≥ 14 |
169 (24.3) |
Body mass index (kg/m2) |
27.5 ± 6.4 |
Menopausal status |
Premenopausal |
480 (69.7) |
Menopausal transition |
120 (17.4) |
Postmenopausal |
89 (12.9) |
Adult education |
High school or less |
130 (18.6) |
Trade school or some college |
259 (37.0) |
Bachelor’s degree |
214 (30.6) |
Master’s degree or higher |
97 (13.9) |
Adult household income |
< 50,000 |
162 (23.9) |
50,000- < 75,000 |
128 (18.9) |
75,000- < 100,000 |
140 (20.7) |
≥ 100,000 |
247 (36.5) |
Adult smoking status |
Never smoker |
377 (53.9) |
Former smoker |
219 (31.3) |
Current smoker |
103 (14.7) |
Recent alcohol intake (drinks/week) |
Non-drinker |
251 (36.0) |
< 3 |
210 (30.1) |
3–7 |
147 (21.1) |
> 7 |
89 (12.8) |
Recent physical exercise (minutes/week) |
No exercise |
214 (30.6) |
< 100 |
170 (24.3) |
100–195 |
162 (23.2) |
≥ 195 |
153 (21.9) |
Mammographic density |
Percent breast density (%) |
31.8 (18.7) |
Dense breast area (cm2) |
35.8 (22.0) |
Non-dense breast area (cm2) |
102.1 (75.0) |