Table 5.
Estimated ORs and 95% CIs for PTB, LBW, and IUGR Attributable to Maternal Exposure to Pollutants During the Entire Pregnancy, Comparing One-Pollutant Models with Two-Pollutant Models (Wuhan, China; August 19, 2010–June 9, 2013)
| Pollutant | PTB OR (95% CI)a |
LBW OR (95% CI)a |
IUGR OR (95% CI)a |
|---|---|---|---|
| PM2.5 | 1.03 (1.02, 1.05) | 1.01 (1.00, 1.03) | 0.99 (0.98, 0.99) |
| + PM10 | 1.04 (1.02, 1.06) | 1.01 (0.99, 1.03) | 0.99 (0.97, 1.00) |
| + SO2 | 1.04 (1.02, 1.05) | 1.01 (1.00, 1.03) | 0.98 (0.97, 0.99) |
| + NO2 | 1.03 (1.02, 1.05) | 1.01 (1.00, 1.03) | 0.99 (0.98, 1.00) |
| + CO | 1.03 (1.01, 1.04) | 1.01 (0.99, 1.02) | 0.99 (0.98, 1.00) |
| + O3 | 1.03 (1.02, 1.04) | 1.02 (0.99, 1.05) | 0.99 (0.98, 1.00) |
| PM10 | 1.02 (1.00, 1.04) | 1.01 (0.98, 1.03) | 0.99 (0.98, 1.00) |
| + PM2.5 | 0.99 (0.97, 1.01) | 0.99 (0.97, 1.02) | 1.00 (0.98, 1.02) |
| + SO2 | 1.03 (1.02, 1.05) | 1.01 (0.99, 1.04) | 0.97 (0.96, 0.99) |
| + NO2 | 1.02 (1.01, 1.04) | 1.01 (0.99, 1.03) | 0.99 (0.98, 1.00) |
| + CO | 1.01 (0.99, 1.02) | 1.00 (0.98, 1.02) | 0.99 (0.98, 1.00) |
| + O3 | 1.02 (1.01, 1.04) | 1.01 (0.99, 1.03) | 0.99 (0.97, 1.00) |
| SO2 | 0.97 (0.96, 0.99) | 0.98 (0.96, 1.00) | 1.03 (1.02, 1.04) |
| + PM2.5 | 0.97 (0.95, 0.98) | 0.98 (0.96, 1.00) | 1.03 (1.02, 1.05) |
| + PM10 | 0.96 (0.94, 0.98) | 0.98 (0.95, 1.00) | 1.04 (1.02, 1.05) |
| + NO2 | 0.98 (0.96, 0.99) | 0.98 (0.97, 1.00) | 1.03 (1.02, 1.04) |
| + CO | 0.95 (0.93, 0.97) | 0.97 (0.95, 0.99) | 1.03 (1.02, 1.05) |
| + O3 | 0.98 (0.96, 1.00) | 0.98 (0.96, 1.01) | 1.03 (1.02, 1.04) |
| NO2 | 0.98 (0.97, 1.00) | 0.98 (0.97, 1.00) | 0.99 (0.98, 1.00) |
| + PM2.5 | 0.98 (0.97, 0.99) | 0.98 (0.97, 1.00) | 0.99 (0.98, 1.00) |
| + PM10 | 0.98 (0.97, 0.99) | 0.98 (0.96, 1.00) | 0.99 (0.98, 1.00) |
| + SO2 | 0.99 (0.97, 1.00) | 0.98 (0.97, 1.00) | 0.99 (0.98, 1.00) |
| + CO | 0.97 (0.96, 0.99) | 0.98 (0.96, 0.99) | 0.99 (0.98, 1.00) |
| + O3 | 1.00 (0.98, 1.02) | 0.98 (0.96, 1.00) | 0.98 (0.97, 1.00) |
| CO | 1.15 (1.11, 1.19) | 1.09 (1.04, 1.13) | 0.98 (0.95, 1.00) |
| + PM2.5 | 1.13 (1.09, 1.17) | 1.08 (1.04, 1.13) | 0.98 (0.96, 1.01) |
| + PM10 | 1.14 (1.10, 1.19) | 1.09 (1.04, 1.14) | 0.98 (0.96, 1.01) |
| + SO2 | 1.18 (1.14, 1.22) | 1.11 (1.06, 1.16) | 0.96 (0.93, 0.99) |
| + NO2 | 1.16 (1.12, 1.21) | 1.11 (1.05, 1.15) | 0.98 (0.95, 1.01) |
| + O3 | 1.17 (1.13, 1.22) | 1.10 (1.05, 1.15) | 0.97 (0.95, 1.00) |
| O3 | 1.05 (1.02, 1.07) | 1.02 (0.99, 1.05) | 0.99 (0.97, 1.01) |
| + PM2.5 | 1.04 (1.02, 1.07) | 1.02 (0.99, 1.05) | 0.99 (0.98, 1.00) |
| + PM10 | 1.05 (1.03, 1.08) | 1.02 (0.99, 1.05) | 0.99 (0.97, 1.01) |
| + SO2 | 1.04 (1.01, 1.07) | 1.01 (0.98, 1.05) | 1.00 (0.98, 1.02) |
| + NO2 | 1.05 (1.01, 1.08) | 1.00 (0.96, 1.04) | 0.97 (0.95, 1.00) |
| + CO | 1.07 (1.05, 1.10) | 1.04 (1.00, 1.07) | 0.99 (0.97, 1.01) |
a Adjusted for maternal age, maternal educational attainment, maternal occupation, gravidity, parity, infant sex, season of conception, and temperature at conception.