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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Environ Int. 2018 Feb 22;114:60–68. doi: 10.1016/j.envint.2018.02.017

Table 2.

Birth characteristics of 346 singletons from the Environment and Reproductive Health (EARTH) Study.

Child Characteristics All Children
N=346
Boys
n=180
Girls
n=166
Male, n (%) 180 (52)
Birth Weight (grams)
 Mean (SD) 3373 (534) 3448 (532) 3292 (526)
 min-max 1090–5040 1310–5040 1090–4650
Head Circumference* (cm)
 Mean (SD) 34.3 (2.5) 35.0 (2.4) 33.7 (2.4)
 min-max 14.0–54.6 29.0–54.6 14.0–37.5
Low Birth Weight
 <2500grams, n (%) 12 (3.5) 4 (2) 8 (5)
Gestational Age at Birth
 Mean weeks (min-max) 39.4 (29–42) 39.4 (32–42) 39.3 (29–42)
 Mean days (min-max) 276 (205–294) 276 (224–294) 276 (205–294)
Preterm Birth
 <37 weeks, n (%) 26 (7.5) 12 (6.7) 14 (8)
Mode of Conception
 IVF 195 (56) 103 (57) 92 (55)
 Non-IVF or Untreated 151 (44) 77 (43) 74 (45)
*

N=227 infants with head circumference measurements.

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