Table 2 Potential risk factors for mean birth weight difference, Camp Lejeune, 1968–1985
Risk factor | Mean birth weight (total births = 10,990) | |
|---|---|---|
#, % | MBW difference (grams) | |
Race | ||
“white” | 8388, 76.3 | Reference |
“other” | 2602, 23.7 | −170.6 (−191.3, −149.8) |
Prenatal care* | ||
Adequate | 4985, 45.4 | Reference |
Inadequate | 6003, 54.6 | −71.1 (−89.0, −53.2) |
Rank† | ||
Officer | 1578, 14.4 | Reference |
Enlisted | 9412, 85.6 | −92.4 (−117.7, −67.0) |
Mother’s age | ||
<20 | 1772, 16.1 | −57.5 (−81.9, −33.0) |
20-29 | 8155, 74.2 | Reference |
30-34 | 850, 7.7 | 71.9 (38.3, 105.6) |
≥35 | 213, 1.9 | 68.7 (3.9, 133.5) |
Father’s age | ||
<20 | 557, 5.2 | −22.2 (−63.0, 18.6) |
20-29 | 8874, 80.8 | Reference |
30-34 | 1121, 10.2 | 80.7 (51.1, 110.3) |
≥35 | 426, 3.9 | 58.9 (12.6, 105.3) |
Parity | ||
Multiparous | 7161, 65.2 | Reference |
Primiparous | 3822, 34.8 | −69.9 (−88.6, −51.2) |
Mom’s education | ||
Not a college graduate | 10090, 91.8 | Reference |
College grad | 896, 8.2 | 74.4 (41.8, 106.9) |
Dad’s education | ||
Not a college graduate | 9559, 87.1 | Reference |
College graduate | 1421, 12.9 | 81.8 (55.3, 108.4) |
Sex of child | ||
Female | 5470, 49.8 | Reference |
Male | 5520, 50.2 | 145.9 (128.2, 163.5) |
Previous fetal death | ||
0 | 9216, 83.9 | Reference |
≥ 1 | 1768, 16.1 | −6.6 (−30.5, 18.1) |