Table 1.
Sample characteristics of New York City Multiethnic Breast Cancer Project (n=191)
| Mean (SD) or Percent (n) | |
|---|---|
| Age at interview (year) | 50.0 (5.7) |
| Educational attainment | |
| ≤ high school | 29.1 (55) |
| Some college/associate degree | 33.9 (64) |
| ≥ college degree | 37.0 (70) |
| Race/ethnicity | |
| Non-Hispanic African American | 42.4 (81) |
| Non-Hispanic African Caribbean | 22.0 (42) |
| Non-Hispanic White | 21.5 (41) |
| Hispanic | 12.5 (24) |
| Non-Hispanic Other | 1.6 (3) |
| Age at menarche (year) | 12.4 (1.8) |
| Body mass index (kg/m2) | 29.8 (6.7) |
| Positive family history of breast cancer | 13.2 (25) |
| Parity | 1.6 (1.5) |
| Age at first full-term pregnancy (in parous women, year) | 23.0 (7.0) |
| Lifetime history of breast feeding | 39.5 (75) |
| Menopausal statusa | |
| Premenopausal | 64.9 (124) |
| Postmenopausal | 35.1 (67) |
a
Postmenopausal women did not have a menstrual period within the last 1 months or had bilateral oophorectomy. Premenopasual women had a peri within the last 12 month and did not have bilateral oophorectomy. If data last menstrual cycle and gynecological surgery were missing, women youn than 54 (90th percentile of age of natural menopause among postmenopau women in this study population) were considered premenopausal and wom 54 years or older were considered postmenopausal.