Table 3.
any pregnancy with outcome data (n=1419 women/3504 pregnancies) | both a pre- and post-oil spill pregnancy, outcome data on both pregnancies (n=633/n=2011) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
N with outcome | % | unadjusted | adjusteda | unadjusted | adjusteda | |||||
OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | |||
pregnancy after spill | 0.76 | 0.59–0.98 | 0.68 | 0.51–0.92 | 0.86 | 0.73–1.00 | 0.66 | 0.41–1.06 | ||
yes | 120 | 8.0 | ||||||||
no | 199 | 10.0 | ||||||||
any exposure | 1.69 | 1.29–2.20 | 1.54 | 1.17–2.02 | 2.06 | 1.46–2.91 | 1.79 | 1.25–2.55 | ||
yes | 205 | 11.1 | ||||||||
no | 113 | 6.9 | ||||||||
income | 0.97 | 0.66–1.44 | 0.85 | 0.58–1.25 | 1.23 | 0.78–1.94 | 1.24 | 0.76–2.03 | ||
yes | 35 | 9.1 | ||||||||
no | 284 | 9.1 | ||||||||
trauma | 1.07 | 0.50–2.30 | 0.95 | 0.45–1.99 | 1.08 | 0.47–2.50 | 1.05 | 0.44–2.50 | ||
yes | 9 | 10.5 | ||||||||
no | 308 | 9.1 | ||||||||
coast | 1.13 | 0.79–1.62 | 1.05 | 0.70–1.57 | 1.16 | 0.76–1.76 | 1.18 | 0.72–1.91 | ||
yes | 57 | 10.3 | ||||||||
no | 255 | 8.8 | ||||||||
litigation | 0.88 | 0.56–1.40 | 0.88 | 0.55–1.42 | 0.99 | 0.57–1.70 | 1.20 | 0.67–2.15 | ||
yes | 30 | 8.3 | ||||||||
no | 289 | 9.2 | ||||||||
contact with oil | ||||||||||
low | 290 | 8.9 | 1.0 | 1.0 | 1.0 | 1.0 | ||||
medium | 16 | 10.3 | 1.13 | 0.63–2.03 | 0.98 | 0.55–1.77 | 1.20 | 0.59–2.44 | 1.06 | 0.49–2.29 |
high | 13 | 14.4 | 1.65 | 0.74–3.66 | 1.55 | 0.63–3.78 | 0.75 | 0.22–2.57 | 0.68 | 0.19–2.41 |
total oil spill exposure | ||||||||||
low | 242 | 9.0 | 1.0 | 1.0 | 1.0 | 1.0 | ||||
medium-low | 39 | 8.4 | 0.86 | 0.56–1.32 | 0.87 | 0.56–1.36 | 0.84 | 0.48–1.45 | 0.97 | 0.53–1.76 |
medium-high | 28 | 12.1 | 1.33 | 0.82–3.15 | 1.21 | 0.71–2.04 | 1.58 | 0.94–2.63 | 1.63 | 0.94–2.84 |
high | 10 | 8.3 | 0.92 | 0.46–1.86 | 0.75 | 0.36–1.54 | 0.88 | 0.38–2.07 | 0.82 | 0.34–2.00 |
adjusted for age, gravidity, weight gain during pregnancy, BMI, race, income, education. In all cases, reference group is those without the specified type of exposure; those unexposed in one analysis might be exposed in another. Generalized estimating equations used to predict outcome of pregnancies with oil spill exposure as a time-varying exposure. First columns include all women with at least one post-oil spill (2010) pregnancy. Second columns include only those women with a pregnancy before and after the oil spill.