Day 3 FSH levels and total antral follicle counts by frequency of moving heavy objects, level of physical exertion and typical work shift among 473 women in the Environment and Reproductive Health (EARTH) Study
| Day 3 FSH levels, IU/L | Total antral follicle counts, n | |||
|---|---|---|---|---|
| Occupational characteristics (number of women) | Unadjusted | Adjusted* | Unadjusted | Adjusted* |
| Moving or lifting heavy objects | ||||
| Never (n=283) | 7.4 (7.0 to 7.7) | 7.4 (7.0 to 7.7) | 13.5 (13.1 to 14.0) | 13.4 (12.9 to 13.8) |
| Sometimes/often (n=190) | 7.8 (7.3 to 8.2) | 7.8 (7.4 to 8.2) | 13.0 (12.5 to 13.5) | 12.7 (12.2 to 13.2) |
| p Value | 0.17 | 0.11 | 0.13 | 0.06 |
| Level of physical exertion | ||||
| Light (n=368) | 7.5 (7.2 to 7.8) | 7.4 (7.1 to 7.7) | 13.2 (12.9 to 13.6) | 13.1 (12.7 to 13.5) |
| Moderate/heavy (n=105) | 7.7 (7.1 to 8.3) | 7.9 (7.3 to 8.5) | 13.7 (13.0 to 14.4) | 13.1 (12.4 to 13.8) |
| p Value | 0.46 | 0.14 | 0.25 | 0.99 |
| Typical work shift | ||||
| Day shift (n=431) | 7.5 (7.2 to 7.8) | 7.5 (7.2 to 7.8) | 13.3 (13.0 to 13.7) | 13.2 (12.8 to 13.5) |
| Evening/night/rotating shift (n=42) | 7.7 (6.7 to, 8.6) | 7.8 (6.9 to 8.7) | 13.2 (12.1 to 14.3) | 12.5 (11.5 to 13.6) |
| p Value | 0.80 | 0.53 | 0.77 | 0.27 |
*Data are presented as predicted marginal means (95% CI) adjusted for age (continuous), BMI (continuous), education (less than college graduate, college graduate and graduate degree) and infertility diagnosis (male, female and unexplained).
BMI, Body Mass Index; FSH, follicle-stimulating hormone.