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Observed and Predicteda Percentages of Low Birth Weight Among Term Births (n = 237,031) by Quartile of Traffic Density, Study of Air Pollution, Genetics and Early Life Events, San Joaquin Valley of California, 2000–2006
| Quartile of Traffic Density | Observed % | T-MLE- Estimated % | 95% Confidence Interval |
|---|---|---|---|
| 1 | 1.94 | 2.02 | 1.90, 2.12 |
| 2 | 2.23 | 2.28 | 2.18, 2.40 |
| 3 | 2.09 | 2.07 | 1.96, 2.17 |
| 4 | 2.39 | 2.27 | 2.16, 2.38 |
Abbreviation: T-MLE, targeted maximum likelihood estimation.
a Obtained using T-MLE analysis.
