Table 6 Bleed length by weight loss and PBB tertiles, Michigan Female Health Study, 1997–1998. Adjusted for PCB, BMI and age at interview, physical activity, smoking history, education, income.
From: Menstrual function among women exposed to polybrominated biphenyls: A follow-up prevalence study
| Â | Ratio of Bleed Length * | |||||
|---|---|---|---|---|---|---|
| Â | Without Weight Loss | With Weight Loss | ||||
| Â | No. | Ratio | (95% CI) | No. | Ratio | (95% CI) |
Tertiles of PBB Estimated at Study Interview § | ||||||
Low | 95 | 1.00 | Ref | 17 | 0.82 | (0.72 to 0.93) |
Middle | 97 | 0.92 | (0.85 to 1.01) | 16 | 0.92 | (0.80 to 1.06) |
High | 101 | 1.00 | (0.91 to 1.09) | 11 | 1.27 | (1.08 to 1.50) |
Test for Interaction: p < 0.0001, 2 df | ||||||
Tertiles of PBB Measured at Cohort Enrollment | ||||||
Low | 97 | 1.00 | Ref | 14 | 0.89 | (0.78 to 1.03) |
Middle | 103 | 1.03 | (0.96 to 1.10) | 17 | 0.98 | (0.86 to 1.12) |
High | 93 | 1.03 | (0.96 to 1.11) | 13 | 1.16 | (1.00 to 1.34) |
Test for Interaction: p = 0.08, 2 df | ||||||