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. Author manuscript; available in PMC: 2021 Apr 12.
Published in final edited form as: J Expo Sci Environ Epidemiol. 2019 Sep 23;30(1):16–27. doi: 10.1038/s41370-019-0162-1

Table 2.

Demographic characteristics of the study population (n=199)

Variables Mean (min,max)
Birth weight (z-score) 2.9 (1.7, 3.5)
Birth length 45.7 (33.0, 64.0)
Head circumference 32.5 (28.0, 36.0)
Gestational age (weeks) 38.3 (33.0, 41.0)
Maternal age (years) 23.1 (18.0, 35.0)
Maternal BMI (kg/m2) 20.5 (15.0, 33.3)
N (%)
Infant Gender
 Female (1) 92 (46.2)
 Male (0) 107 (53.8)
Maternal Education
 0 38 (19.0)
 1 60 (30.2)
 2 101 (50.8)
Parity
 0 88 (44.3)
 1 111 (55.7)