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Table 1 Demographic factors and medical history in relation to cell proliferation ratio: 346 Arab-Bedouin women

From: Can cell proliferation of umbilical cord blood cells reflect environmental exposures?

Patients characteristics

Patients with cell proliferation in

p value

N = 346 (N = 286)

Geometric mean (95% CI)

Prevalence ratio

p value

Q1: 0.71–1.48

Q2: 1.48–2.15

Q3: 2.15–3.15

Q4: 3.15–8.78

N = 86

N = 87

N = 86

N = 87

Maternal age at delivery, years

 Mean ± SD

26.4 ± 5.0

28.4 ± 6.6

27.1 ± 6.0

27.6 ± 5.9

0.167

<26 163 (47.8)

2.17 (2.02; 2.34)

1.00

 

 Median

26

27

25

26

 

≥26 178 (52.2)

2.17 (2.01; 2.36)

1.00c

0.988

Parity, % (n)

 1st delivery

29.1% (25)

27.6% (24)

34.9% (30)

28.7% (25)

0.956

104 (30.5)

2.18 (1.99; 2.39)

1.00

 

 2–5 deliveries

48.8% (42)

47.1% (41)

39.5% (34)

49.4% (43)

 

160 (46.9)

2.17 (1.99; 2.36)

1.00c

0.961

 6+ deliveries

20.9% (18)

23.0% (20)

24.4% (21)

20.7% (18)

 

77 (22.7)

2.17 (1.96; 2.41)

1.00c

0.988

Lack of Prenatal Care, % (n)

7.0% (6)

8.0% (7)

10.5% (9)

12.6% (11)

0.586

No: 312 (90.2)

Yes: 34 (9.8)

2.15 (2.03; 2.27)

2.41 (2.01; 2.89)

1.00

1.12

0.205

Consanguineous marriagea,b, % (n)

46.3% (31)

52.1% (37)

49.3% (34)

53.5% (38)

0.837

No: 138 (49.6)

Yes: 140 (50.4)

2.13 (1.96; 2.31)

2.23 (2.08; 2.43)

1.00

1.05

0.434

Relative proximity in consanguineous marriage, % (n)

 1st degree

80.0% (24)

63.6% (21)

76.5% (26)

89.2% (33)

0.141

104 (77.6)

2.30 (2.07; 2.56)

1.00

 

 2nd degree

20.0% (6)

24.2% (8)

17.6% (6)

5.4% (2)

 

22 (16.4)

1.90 (1.62; 2.23)

0.83

0.118

 Distant relatives

0.0% (0)

12.1% (4)

5.9% (2)

5.4% (2)

 

8 (6.0)

2.40 (1.84; 3.13)

1.04

0.831

History of repeated abortions

7.0% (6)

6.9% (6)

2.3% (2)

2.3% (2)

0.241

No: 330 (95.4)

Yes: 16 (4.6)

2.19 (2.08; 2.31)

1.77 (1.37; 2.28)

1.00

0.81

0.092

Received a recommendation for abortion

     

No: 278 (97.2)

Yes: 16 (2.8)

2.20 (2.08; 2.33)

1.43 (1.03; 1.99)

1.00

0.65

0.016

Chronic disease

11.6% (10)

8.0% (7)

9.3% (8)

13.8% (12)

0.622

No: 337 (97.4)

Yes: 9 (2.6)

2.16 (2.05; 2.28)

2.52 (1.62; 3.93)

1.00

1.18

0.359

 Diabetes mellitus

8.1% (7)

3.4% (3)

5.8% (5)

9.2% (8)

0.432

No: 338 (97.7)

Yes: 8 (2.3)

2.17 (2.05; 2.29)

2.33 (1.46; 3.74)

1.00

1.08

0.68

 Chronic hypertension

0.0% (0)

0.0% (0)

0.0% (0)

2.3% (2)

0.112

No: 344 (99.4)

Yes: 2(0.6)

2.16 (2.05; 2.28)

4.81 (4.00; 5.79)

1.00

2.23

0.024

Self-reported complications in pregnancya, % (n)

1.4% (1)

2.7% (2)

0.0% (0)

0.0% (0)

0.312

No: 283 (99.0)

Yes: 3 (1.0)

2.19 (2.06; 2.32)

1.34 (0.58; 3.07)

1.00

0.61

0.091

Paternal smokinga, % (n)

98.4% (63)

95.8% (69)

92.8% (64)

92.9% (65)

0.384

No: 14 (5.1)

Yes: 261 (94.9)

2.70 (2.03; 3.60)

2.16 (2.04; 2.30)

1.00

0.8

0.105

  1. aInformation on consanguineous marriages was available for 80.3% of the sample, complications in pregnancy: for 82.7% of the sample and paternal smoking: for 79.5%.
  2. bConsanguineous marriages differ by their degree of proximity between the married relatives. The first degree is assigned to the parents who are also the first cousins, the second degree: to the second cousins and the category of the “distant relatives” is assigned to more distant relationships in the family.
  3. cValue “1.00” indicates a very small effect on CP ratio approximating “1”.