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. 2021 Oct 23;106(1):185–199. doi: 10.1093/biolre/ioab197

Table 1.

Clinical and demographic characteristics of women at term with or without labor

TNL (n = 28) TL (n = 21) p
Maternal age [years; median (IQR)]a 25 (21–28.2) 24 (22–28) 0.97
Body mass index [kg/m2; median (IQR)]a 26.9 (24.1–34) 24.8 (21.1–27.5) 0.06
Nulliparousb 8/28 (28.6%) 8/21 (38.1%) 0.55
Race/ethnicity
African-Americanb 27/28 (96.4%) 18/21 (85.7%) 0.3
Fetal sex (female)b 16/28 (57.1%) 11/21 (52.4%) 0.78
Gestational age at delivery [weeks; median (IQR)]a 39.6 (39–40.6) 38.9 (38.1–39.3) <0.001
Birthweight [g; median (IQR)]a 3452.5 (3153.8–3596.2) 3175 (2930–3380) 0.004
Birthweight percentile [%; median (IQR)]a 62.4 (39.1–77.4) 52.7 (29.2–71.3) 0.29
Gestational age at sampling [weeks; median (IQR)]a 38.5 (38.0–39.0) 38.9 (38.1–39.3) 0.4

Data are given as medians (interquartile range, IQR) and percentages (n/N).

aWelch’s t-test.

bFisher’s exact test.