Table 1 Composition of the Study Sample.

From: Single cell profiling at the maternal–fetal interface reveals a deficiency of PD-L1+ non-immune cells in human spontaneous preterm labor

Sample characteristics

Term

Preterm

Labor (TL)

Non-labor (TNL)

Labor (PL)

Non-labor (PNL)

Starting sample size

16

12

13

14

Sample size following QC

16

11

11

14

Mean maternal age ± SD (range) in years

26.1 ± 4.7 (19–35)

30.0 ± 2.9 (26–36)

24.6 ± 3.7 (19–29)

29.6 ± 5.2 (22–36)

Mean gestational age at delivery ± SD (range) in weeks

38.8 ± 0.9 (38–40)

39.0 ± 0.6 (38–40)

28.5 ± 4.5 (22–34)

30.4 ± 3.0 (26–34)

Infant sex (M:F)

4:12

5:6

6:5

9:5

Primigravidae (%)

31

0

18

0

  1. All labor was spontaneous (see “Materials and methods”), all subjects self-identified as Black. Preterm non-laboring placentas were from women with preeclampsia or eclampsia undergoing cesarean section.
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