Table 4.
PCE exposure and time-to-pregnancy.
| TTP 3–6 months vs. < 3 months |
TTP 7–12 months vs. < 3 months |
TTP > 12 months vs. < 3 months |
||||
|---|---|---|---|---|---|---|
| Exposure | Events/N | Adjusteda RR (95% CI) | Events/N | Adjusteda RR (95% CI) | Events/N | Adjusteda RR (95% CI) |
| Cumulative PCE exposure (grams) | ||||||
| None | 335/2202 | Reference | 163/2202 | Reference | 272/2202 | Reference |
| Any | 270/1624 | 0.96 (0.83, 1.12) | 114/1624 | 0.89 (0.71, 1.13) | 174/1624 | 0.85 (0.71, 1.01) |
| None | 335/2202 | Reference | 163/2202 | Reference | 272/2202 | Reference |
| > 0– < 10 | 90/546 | 0.96 (0.78, 1.17) | 40/546 | 0.90 (0.65, 1.23) | 50/546 | 0.80 (0.63, 1.00) |
| 10– < 100 | 110/663 | 0.96 (0.79, 1.16) | 47/663 | 0.96 (0.72, 1.28) | 71/663 | 0.89 (0.70, 1.11) |
| ≥ 100 | 70/415 | 0.99 (0.77, 1.27) | 27/415 | 0.78 (0.52, 1.16) | 53/415 | 0.86 (0.64, 1.15) |
| Average monthly PCE exposure (grams) | ||||||
| None | 392/2518 | Reference | 185/2518 | Reference | 306/2518 | Reference |
| Any | 213/1308 | 0.95 (0.83, 1.10) | 92/1308 | 0.91 (0.74, 1.13) | 140/1308 | 0.87 (0.74, 1.02) |
| None | 392/2518 | Reference | 185/2518 | Reference | 306/2518 | Reference |
| > 0– < 1 | 132/798 | 0.96 (0.81, 1.13) | 58/798 | 0.94 (0.73, 1.21) | 63/798 | 0.67 (0.54, 0.83) |
| 1– < 2.5 | 33/215 | 0.94 (0.73, 1.21) | 16/215 | 1.03 (0.70, 1.53) | 31/215 | 0.98 (0.73, 1.31) |
| ≥ 2.5 | 48/295 | 0.96 (0.76, 1.22) | 18/295 | 0.78 (0.50, 1.21) | 46/295 | 1.26 (1.01, 1.58) |
a
Adjusted for maternal age, paternal age, year of pregnancy, maternal education, paternal occupation, first trimester cigarette smoking, first trimester alcohol intake, and pregnancy number.