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Table 6 Birth weight and average VOC exposure during pregnancy, term births, Camp Lejeune 1968-1985

From: Evaluation of contaminated drinking water and preterm birth, small for gestational age, and birth weight at Marine Corps Base Camp Lejeune, North Carolina: a cross-sectional study

Exposure # Mean birth weight difference in grams (95% CI) p value
Tetrachloroethylene (PCE)*    
Unexposed (ref) 3453 --  
>0 - <35.9 ppb 3769 4.4 (−17.4, 26.1) 0.69
≥35.9- <52.6 ppb 1882 −28.5 (−55.1, −1.9) 0.04
≥52.6 - <80.7 ppb 1131 3.8 (−28.3, 36.0) 0.82
≥80.7 ppb 755 8.2 (−29.5, 46.0) 0.67
Trichloroethylene (TCE)    
Unexposed (ref) 1979 --  
>0 - <1.7 ppb 4599 −42.2 (−66.7, −17.7) <0.01
≥1.7- <3.1 ppb 2102 −48.9 (−77.4, −20.3) <0.01
≥3.1 - <9.8 ppb 1411 −40.5 (−72.3, −8.7) 0.01
≥9.8 ppb 899 −78.3 (−115.0, −41.7) <0.01
Benzene§    
Unexposed (ref) 7820 --  
>0 - <1 ppb 2474 −14.5 (−35.5, 6.5) 0.18
≥1 ppb 696 −36.2 (−72.3, −0.1) 0.05
  1. *Adjusted for prenatal care, sex of child, mother’s race, mother’s age, mother’s education, parity, mother had a previous fetal death, father’s age, and rank of military member.
  2. Adjusted for sex of child, mother’s race, and parity.
  3. §Adjusted for prenatal care, sex of child, mother’s race, parity, and rank of military member.