Table 1

Selected Characteristics of 23,420 Mother Placenta Pairs in the Collaborative Perinatal Project.

Maternal Socio-Demographic Characteristics


Age (years)

24.5 ± 5.9

Education (years)

≥ 12

11,087 (47.4)

< 12

12,333 (52.7)

Race

White

12,198 (52.1)

Black

11,222 (47.9)

Annual Family Income

≥ $5,000

6,907 (29.5)

< $5,000

16,513 (70.5)

Smoking Intensity

22.8 ± 4.3

Non-Smoker

12, 350 (52.7)

Light Smoker (< 1 pack/day)

7, 084 (30.3)

Heavy Smoker (≥ 1 pack/day)

3, 986 (17.0)

Pre-pregnancy BMI (kg/m2)

22.8 ± 4.3

Pregnancy weight gain (kg)

9.7 ± 5.0

Maternal Obstetric Characteristics

Anemia

5,024 (21.5)

Gestational Diabetes

360 (1.6)

Hypertensive disease

543 (2.3)

Parity

Nulliparous

6,687 (28.6)

Parous

16,733 (71.5)

Placental Characteristics

Placental Weight (grams)

438 ± 92

Placental thickness (mm)

21.9 ± 4.8

Chorionic plate area (cm2)

247.5 ± 51.3


All results presented as n (%) or mean ± SD

Equivalent to approximately $30,000 in 2005.

Baptiste-Roberts et al. BMC Pregnancy and Childbirth 2008 8:44   doi:10.1186/1471-2393-8-44

Open Data