Table 4.
Frequencies, Odds Ratios and 95% Confidence Intervals for Pregnancy Loss According to PCE Exposure
| Number of Losses | Number of Livebirths | Crude Odds Ratio (95% CI) | Multivariatea GEE Odds Ratio (95% CI) | |
|---|---|---|---|---|
| Cumulative PCE Exposure up to LMP (g) | ||||
| >= 75th pctile | 70 | 529 | 1.0 (0.8–1.3) | 0.9 (0.7–1.3) |
| 50th – < 75th pctile | 69 | 530 | 1.0 (0.7–1.3) | 0.8 (0.6–1.2) |
| 25th – < 50th pctile | 68 | 531 | 1.0 (0.7–1.3) | 0.9 (0.6–1.3) |
| >0 – < 25th pctile | 76 | 522 | 1.1 (0.8–1.4) | 1.1 (0.8–1.5) |
| 0 (Referent) | 376 | 2796 | 1.0 (----) | 1.0 (----) |
| Maximum Annual PCE Before LMP Year (g) | ||||
| >= 75th pctile | 63 | 449 | 1.1 (0.8–1.4) | 1.1 (0.8–1.5) |
| 50th – < 75th pctile | 67 | 517 | 1.2 (0.9–1.5) | 1.1 (0.8–1.7) |
| 25th – < 50th pctile | 53 | 507 | 0.9 (0.7–1.2) | 0.8 (0.5–1.1) |
| >0 – < 25th pctile | 74 | 511 | 1.3 (1.0–1.7) | 1.4 (1.0–1.9) |
| 0 (Referent) | 402 | 3118 | 1.0 (----) | 1.0 (----) |
| Average Monthly PCE Exposure During LMP Year (g) | ||||
| >= 75th pctile | 46 | 443 | 0.7 (0.5–1.0) | 0.7 (0.5–1.0) |
| 50th – < 75th pctile | 48 | 441 | 0.8 (0.6–1.1) | 0.8 (0.6–1.2) |
| 25th – < 50th pctile | 53 | 436 | 0.9 (0.6–1.2) | 0.7 (0.5–1.1) |
| >0 – < 25th pctile | 66 | 423 | 1.1 (0.8–1.5) | 1.1 (0.8–1.6) |
| 0 (Referent) | 446 | 3165 | 1.0 (----) | 1.0 (----) |
a
Controlled for maternal age, paternal age, maternal history of gynecologic infections, number of prior livebirths, and year of pregnancy