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. 2021 Jul 28;20:86. doi: 10.1186/s12940-021-00772-5

Table 1.

Participant Characteristics (n = 154)

Characteristic n Mean ± SD or %a Range
Age at enrollment (years) 154 32.4 ± 4.5 20.0 − 45.0
Body mass index at 1st visit (kg/m2) 153 25.6 ± 5.4 17.5–47.7
Gestational age at delivery (weeks) 154 39.1 ± 1.9 24.1 − 41.7
Preterm birth (< 37 weeks) 10 7%
Delivery method 154
 Cesarean 37 24%
 Vaginal—induced 40 26%
 Vaginal—spontaneous 77 50%
Education 141
 Bachelor’s degree or higher 116 82%
 No bachelor’s degree 25 18%
Race/ethnicity 154
 Non-Hispanic Black 12 8%
 Non-Hispanic White 77 50%
 Other 65 42%

aPercentages may sum to more than 100% due to rounding