Table 1.
Participant Characteristics at Study Entry
| Characteristic | No. | Value |
|---|---|---|
| Age, y | 259 | 27.3 (8.2) |
| BMI, kg/m2 | 259 | 24.1 (3.9) |
| Body fat, % | 248 | 29.5 (6.0) |
| Race (C/AA/A) | 259 | 59/20/21 |
| Education, postsecondary | 259 | 87 |
| Current smokers | 259 | 4 |
| Nulliparous | 253 | 74 |
| Past use of hormonal contraception | 255 | 55 |
| Currently sexually activea | 192 | 70 |
| Age at menarche, y | 255 | 12.5 (1.2) |
| Usual menstrual bleeding, days | 239 | 5.1 (1.1) |
| Glucose, mg/dL | 257 | 87.2 (6.6) |
| TG, mg/dL | 257 | 59.2 (27.9) |
| Total cholesterol, mg/dL | 257 | 163.4 (29.0) |
| HDL, mg/dL | 257 | 50.1 (11.5) |
| LDL, mg/dL | 257 | 101.5 (25.7) |
| Albumin, g/dL | 257 | 4.0 (0.3) |
Abbreviations: A, Asian; AA, African American; C, Caucasian; TG, triglyceride; HDL, high-density lipoprotein cholesterol; LDL, low-density lipoprotein cholesterol. Data are means (SD) or %; data reflect the baseline visit of the first menstrual cycle (study entry).
a
Percentage of those reporting any past sexual activity; n = 67 reported no (past or current) sexual activity.