Table 1.
Maternal and infant characteristics [n(%)] for full-term births to mothers residing in a Georgia county with a PM2.5 monitor and in all Georgia counties, January 1, 2002 to December 31, 2005.
| Characteristic | Counties with Monitor (n=180,440) | All Counties (n=403,881) |
|---|---|---|
| Birthweight (g) | ||
| <2,500 | 5,448 (3) | 11,429 (3) |
| 2,500–3,000 | 32,791 (18) | 70,960 (18) |
| 3,000–3,500 | 76,709 (43) | 170,279 (42) |
| ≥3,500 | 65,492 (36) | 151,213 (37) |
| Female Sex | 88,670 (49) | 198,463 (49) |
| Firstborn | 73,485 (41) | 160,659 (40) |
| Maternal Race | ||
| Non-Hispanic White | 71,707 (40) | 212,231 (53) |
| Non-Hispanic Black | 78,201 (43) | 128,795 (32) |
| Hispanic | 30,532 (17) | 62,855 (16) |
| Maternal Education | ||
| Less than 9th Grade | 13,536 (8) | 28,697 (7) |
| 9th through 12th Grade | 28,604 (16) | 70,124 (17) |
| High School Degree | 52,613 (29) | 125,112 (31) |
| Some college or higher | 85,687 (47) | 179,948 (45) |
| Maternal Age (years) | ||
| <20 | 19,512 (11) | 46,811 (12) |
| 20–34 | 137,571 (76) | 310,806 (77) |
| ≥35 | 23,357 (13) | 46,264 (11) |
| Married | 99,951 (55) | 243,110 (60) |
| Reported Use during pregnancy | ||
| Tobacco | 8,443 (5) | 31,090 (8) |
| Alcohol | 1,359 (1) | 2,4667 (1) |
| Census Tract Level Poverty (% residents below poverty level) | ||
| <5% | 47,626 (26) | 106,339 (26) |
| 5%–10% | 43,255 (24) | 99,089 (25) |
| 10%–20% | 49,036 (27) | 116,471 (29) |
| ≥20% | 40,523 (22) | 81,982 (20) |