Table 1.
Maternal and infant quantitative characteristics, upstate New York, 2003–2005.
| Selected percentiles |
|||||||||
|---|---|---|---|---|---|---|---|---|---|
| Characteristic | n | Mean | Minimum | 10th | 25th | 50th | 75th | 90th | Maximum |
| PbB (μg/dL) | 43,288 | 2.1 | 0 | 1 | 1 | 2 | 3 | 3 | 9.9 |
| Days from lead test to date of birth (day) | 43,288 | 203 | 0 | 110 | 170 | 204 | 223 | 237 | 1,082 |
| Maternal age (years) | 43,288 | 27.6 | 15 | 20 | 23 | 27 | 32 | 36 | 49 |
| Body mass index (kg/m2) | 40,797 | 26.4 | 12.5 | 19.9 | 21.9 | 24.9 | 29.4 | 35.2 | 66.5 |
| Gestational age (week) | 43,288 | 38.8 | 20 | 37 | 38 | 39 | 40 | 41 | 44 |
| Birth weight (g) | 43,288 | 3,331 | 205 | 2,680 | 3,030 | 3,365 | 3,686 | 3,997 | 5,610 |