Table I.
Characteristics and primary Society for Assisted Reproductive Technology (SART) diagnosis among 215 women with antral follicle count (AFC) measurement enrolled in the Environment and Reproductive Health (EARTH) study between 2004 and 2012.
| Characteristic | Total cohort (N = 215) |
|---|---|
| N (%) | |
| Age at study entry (years) | |
| Mean ± SD | 35.7 ± 4.6 |
| Range | 20–45 |
| Age ≥37 | 97 (45%) |
| BMI (kg/m2) | |
| Mean ± SD | 25.0 ± 5.0 |
| Range | 16.1–40.5 |
| Underweight or normal (<25) | 128 (60%) |
| Overweight or obese (>=25) | 87 (40%) |
| Smoking | |
| Never smoked | 159 (74%) |
| Ever smoked | |
| Current smoker | 11 (5%) |
| Former smoker | 45 (21%) |
| Race | |
| Caucasian | 175 (81%) |
| Black/African American | 7 (3%) |
| Asian | 16 (7%) |
| Other | 17 (8%) |
| Nulligravida | 143 (67%) |
| Nullipara | 190 (88%) |
| AFC | |
| Mean ± SD | 12.3 ± 6.9 |
| Range | 2–40 |
| FSH IU/l1 | |
| Mean ± SD | 7.5 ± 2.9 |
| Range | 1.0–23.8 |
| Serum day 3 E2 pmol/l2 | |
| Mean ± SD | 47.2 ± 28.9 |
| Range | 14.0–297 |
| Trying to conceive3 ≥24 months | 55(26%) |
| Primary SART diagnosis at study entry | |
| Female factor | 90 (42%) |
| Diminished ovarian reserve | 25 (12%) |
| Ovulatory dysfunction | 31 (14%) |
| Endometriosis | 18 (8%) |
| Uterine factor | 4 (2%) |
| Tubal factor | 12 (6%) |
| Male factor | 49 (23%) |
| Unexplained | 75 (35%) |
| Year at study entry | |
| 2004–2006 | 45 (21%) |
| 2007–2009 | 111 (52%) |
| 2010–2012 | 59 (27%) |
1FSH measured in 214 women.
2Serum estradiol (E2) levels measured in 211 women.
3Number of months trying to conceive was self-reported at time of study entry.