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Table 1 Summary of the maternal and newborn characteristics, cord blood hormone levels, and cord blood cell populations

From: Correlation of umbilical cord blood hormones and growth factors with stem cell potential: implications for the prenatal origin of breast cancer hypothesis

Variable

n

Meana

Range

Subject characteristics

   

   Mother's age (years)

289

30.0 ± 5.5

18.0–43.0

   Race/ethnicity of mother and biological father

   

Both Caucasian

 

147 (58.33%)

 

Both African-American

 

20 (7.94%)

 

Both Asian

 

39 (15.48%)

 

Both Hispanic

 

15 (5.95%)

 

Mixed

 

31 (12.30%)

 

No data

 

37

 

   Parity

   

First

 

118 (43.54%)

 

Second

 

77 (28.41%)

 

Third

 

46 (16.97%)

 

Fourth and above

 

30 (11.07%)

 

No data

18

  

   Prepregnancy weight (kg)

199

62.7 ± 12.3

38.3–112.5

   Gestation duration (weeks)

289

39.6 ± 1.2

36.5–44.0

   Gender of the baby

   

Male

 

134 (50.57%)

 

Female

 

131 (49.43%)

 

No data

24

  

   Birth weight (g)

288

3,402.4 ± 431.9

2,256–4,660

   Cord blood volume (ml)

289

92.5 ± 24.6

44.5–201.5

Cord blood plasma hormone levels

   

   Estradiol (ng/dl)

289

930.9 ± 528.6

40.6–3,305.4

   Unconjugated estriol (ng/ml)

289

331.0 ± 141.4

18.1–1,459.5

   Testosterone (ng/ml)

289

1.7 ± 0.9

0.3–9.2

   Sex hormone-binding globulin (nmol/l)

289

22.8 ± 8.0

6.7–55.0

   Progesterone (ng/ml)

289

226.6 ± 134.4

26.5–841.0

   Prolactin (ng/ml)

289

254.0 ± 103.6

47.4–686.0

   Insulin-like growth factor-1 (ng/ml)

289

81.2 ± 52.5

10.2–306.7

   Insulin-like growth factor binding protein-3 (ng/ml)

289

941.1 ± 309.9

300.0–2,534.0

Cord blood cell populations

   

   Initial total nucleated cells × 106/ml

288b

16.1 ± 5.2

6.3–40.6

   Initial mononuclear cells × 106/ml

288b

7.6 ± 2.8

2.8–20.8

   CD34+ cells/103 mononuclear cells

289

8.9 ± 5.5

0.4–35.5

   CD34+CD38- cells/103 mononuclear cells

289

4.1 ± 2.7

0.0–14.4

   CD34+c-kit + cells/103 mononuclear cellsc

249

7.6 ± 4.9

0.2–34.4

   Granulocyte–macrophage colony-forming units/103 mononuclear cellsd

175

5.4 ± 3.2

0.5–19.7

  1. aData presented as mean ± standard deviation or mean (%). bInitial total nucleated cells/ml and mononuclear cells/ml values not determined in one sample. cOnly samples from the Tufts–New England Medical Center were assayed. dData only from Tufts–New England Medical Center-derived samples, due to a change in assay method.