Table 1.

Characterization of the study groups

Parameter	Preterm labour (PTL)	Term labor (TL)	Preterm not in labour (PTnotL)	Term not in labor (TnotL)
N	17	14	8	11
Age (median, range)	28 (18–37)	28 (20–39)	32.5 (27–44)	29 (25–39)
Parity (median, range)	1 (0–3)	1 (0–3)	1 (0–7)	1 (0–2)
Previous preterm births	2	0	1	1
Gestational age in days (median, range)	242 (184–255)	281 (259–294)	219 (183–256)	270 (263–284)
Gestational age in full gestational weeks (range)	26+2 – 36+3	37+0 – 42+0	26+1 – 36+4	37+4 – 40+4
Treated with corticosteroids	2	0	5	0