. 2016 Dec 12;9(1):33–45. doi: 10.2217/epi-2016-0095

Table 1. . Maternal demographics for 80 pregnant women participating in the PROGRESS cervix study.

	n (%)
Education
<12 years	22 (27.5)
≥12 years	58 (72.5)
Smoke in home
No	57 (71)
Yes	23 (29)
Parity
Multiparous	50 (62.5)
Nulliparous	30 (37.5)
	Mean ± SD (range)
Maternal age (years)	28.0 ± 5.7 (18–41)
Maternal BMI (kg/m²)	26.8 ± 4.5 (18–43)
Gestational age at delivery (weeks)^†	38.4 ± 1.3 (34–42)

^†Four individuals were lost to follow-up at delivery and information on gestational age is not available.

SD: Standard deviation.