Table 5.
Results of the multipollutant models (including CO, SO2, NO2 and PM10) for the Linwood site for term small for gestational age (SGA) and preterm birth (PTB).
| Windows and quartiles of exposures | N | CO
|
SO2
|
NO2
|
PM10
|
||
|---|---|---|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | ||||
| Term SGA | 1st month | 2nd | 24,191 | 1.04 (0.89–1.21) | 1.00 (0.83–1.20) | 1.14 (0.97–1.33) | 0.99 (0.88–1.10) |
| 3rd | 0.90 (0.77–1.05) | 0.99 (0.83–1.17) | 1.12 (0.97–1.31) | 1.06 (0.94–1.20) | |||
| 4th | 1.02 (0.87–1.19) | 0.93 (0.78–1.11) | 1.28 (1.09–1.49) | 1.00 (0.88–1.13) | |||
| Last month | 2nd | 26,946 | 0.93 (0.80–1.08) | 0.99 (0.83–1.18) | 1.09 (0.93–1.26) | 1.04 (0.94–1.16) | |
| 3rd | 1.03 (0.89–1.20) | 0.97 (0.82–1.15) | 1.04 (0.90–1.20) | 0.99 (0.88–1.17) | |||
| 4th | 0.98 (0.84–1.14) | 1.03 (0.86–1.23) | 0.99 (0.85–1.16) | 1.01 (0.90–1.14) | |||
| 1st trimester | 2nd | 25,952 | 1.22 (1.02–1.46) | 1.18 (0.92–1.51) | 1.04 (0.83–1.31) | 1.12 (0.98–1.28) | |
| 3rd | 1.20 (1.00–1.45) | 1.01 (0.83–1.23) | 1.04 (0.83–1.31) | 1.06 (0.92–1.23) | |||
| 4th | 1.16 (0.96–1.41) | 1.05 (0.87–1.28) | 1.14 (0.91–1.44) | 1.09 (0.94–1.25) | |||
| 2nd trimester | 2nd | 25,272 | 1.14 (0.95–1.36) | 1.30 (1.01–1.69) | 1.06 (0.81–1.40) | 1.10 (0.95–1.27) | |
| 3rd | 1.19 (0.98–1.44) | 1.12 (0.91–1.37) | 1.03 (0.78–1.35) | 1.05 (0.91–1.21) | |||
| 4th | 1.22 (1.01–1.47) | 1.11 (0.90–1.36) | 1.12 (0.85–1.48) | 1.06 (0.91–1.24) | |||
| 3rd trimester | 2nd | 24,651 | 0.97 (0.83–1.14) | 1.17 (0.94–1.45) | 1.10 (0.92–1.33) | 0.92 (0.81–1.05) | |
| 3rd | 0.98 (0.83–1.16) | 1.24 (1.02–1.50) | 1.07 (0.88–1.29) | 0.97 (0.85–1.11) | |||
| 4th | 0.99 (0.84–1.17) | 1.31 (1.06–1.60) | 1.04 (0.85–1.26) | 0.92 (0.81–1.04) | |||
| PTB | 1st month | 2nd | 29,560 | 0.94 (0.84–1.06) | 1.27 (1.11–1.47) | 1.06 (0.94–1.19) | 1.00 (0.92–1.09) |
| 3rd | 1.00 (0.90–1.13) | 1.14 (0.99–1.30) | 1.08 (0.97–1.21) | 1.01 (0.91–1.11) | |||
| 4th | 0.95 (0.85–1.06) | 1.13 (0.98–1.30) | 1.05 (0.94–1.18) | 1.08 (0.98–1.19) | |||
| Last month | 2nd | 32,768 | 1.01 (0.90–1.13) | 1.04 (0.91–1.19) | 0.92 (0.82–1.03) | 1.06 (0.97–1.15) | |
| 3rd | 0.94 (0.84–1.05) | 1.06 (0.93–1.21) | 0.99 (0.89–1.11) | 0.98 (0.89–1.08) | |||
| 4th | 1.03 (0.92–1.16) | 0.99 (0.86–1.14) | 1.01 (0.90–1.14) | 0.92 (0.84–1.01) | |||
Adjusted for infant sex, maternal race, age groups, education levels, tobacco use, prenatal care, birth seasons, site of residency and birth periods.
Note: Term SGA models do not include infant sex.