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Table 2 Environmental Factors in relation to cell proliferation ratio: 346 Bedouin Women

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

Environmental factorsa

Patients with 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

(N = 69)a

(N = 74)a

(N = 70)a

(N = 73)a

Type of a house, % (n)

 Shack/tent

21.7% (15)

21.6% (16)

28.6% (20)

24.7% (18)

0.147

69 (24.6)

2.18 (1.95; 2.44)

1.00

 

 One-story building

42.0% (29)

47.3% (35)

41.4% (29)

54.8% (40)

 

133 (47.5)

2.30 (2.10; 2.51)

0.96

0.534

 Multi-story building

33.3% (23)

28.4% (21)

28.6% (20)

19.2% (14)

 

78 (27.9)

1.99 (1.78; 2.23)

0.87

0.052

Environmental factors reported as disturbing, % (n)

 Dust

87.0% (60)

91.9% (68)

87.1% (61)

91.8% (67)

0.627

No: 30 (10.5)

Yes: 256 (89.5)

2.09 (1.76; 2.48)

2.18 (2.05; 2.32)

1.00

1.05

0.634

 Mosquitoes

91.3% (63)

86.5% (64)

92.9% (65)

87.7% (64)

0.561

No: 30 (10.5)

Yes: 256 (89.5)

2.38 (1.96; 2.88)

2.15 (2.02; 2.29)

1.00

0.91

0.303

 Noise

10.1% (7)

8.1% (6)

2.9% (2)

4.1% (3)

0.247

No: 268 (93.7)

Yes: 18 (6.3)

2.20 (2.08; 2.34)

1.78 (1.42; 2.24)

1.00

0.81

0.082

 Waste

4.3% (3)

10.8% (8)

2.9% (2)

9.6% (7)

0.172

No: 266 (93.0)

Yes: 20 (7.0)

2.16 (2.04; 2.30)

2.34 (1.82; 3.00)

1.00

1.08

0.501

 Transport (family cars)

53.6% (37)

44.6% (33)

57.1% (40)

67.1% (49)

0.052

No: 127 (44.4)

Yes: 159 (55.6)

2.10 (1.94; 2.28)

2.24 (2.06; 2.43)

1.00

1.06

0.297

Type of heating, % (n)

 Electric/AC/central heating

34.8% (24)

48.6% (36)

37.1% (26)

34.2% (25)

0.245

No: 175 (61.2)

Yes: 111 (38.8)

2.19 (2.03; 2.37)

2.14 (1.96; 2.34)

1.00

0.98

0.703

 Stove with chimney

10.1% (7)

9.5% (7)

10.0% (7)

6.8% (5)

 

No: 260 (90.9)

Yes: 26 (9.1)

2.19 (2.05; 2.33)

2.06 (1.76; 2.41)

1.00

0.94

0.571

 Stove without chimney

43.5% (30)

25.7% (19)

38.6% (27)

46.6% (34)

 

No: 176 (61.5)

Yes: 110 (38.5)

2.15 (2.01; 2.30)

2.20 (1.99; 2.47)

1.00

1.03

0.581

 Open fire

7.2% (5)

10.8% (8)

10.0% (7)

12.3% (9)

 

No: 257 (89.9)

Yes: 29 (10.1)

2.16 (2.03; 2.29)

2.14 (1.95; 2.80)

1.00

1.08

0.422

Cooking on open fire, % (n)

76.8% (53)

67.6% (50)

74.3% (52)

79.5% (58)

0.39

No: 73 (25.5)

Yes: 213 (74.5)

2.11 (1.89; 2.35)

2.20 (2.05; 2.36)

1.00

1.04

0.525

Usage of pesticides, % (n)

91.3% (63)

86.5% (64)

90.0% (63)

86.3% (63)

0.723

No: 33 (11.5)

Yes: 253 (88.5)

2.42 (2.03; 2.89)

2.14 (2.02; 2.28)

1.00

0.88

0.186

Using water containers, % (n)

91.3% (63)

86.5% (64)

92.9% (65)

93.2% (68)

0.47

No: 26 (9.1)

Yes: 260 (90.9)

2.18 (1.79; 2.66)

2.17 (2.04; 2.31)

1.00

1.00

0.974

Type of water container, % (n)

 Water tank

26.1% (18)

33.8% (25)

28.6% (20)

19.2% (14)

0.109

No: 209 (73.1)

Yes: 77 (26.9)

2.22 (2.06; 2.38)

2.07 (1.87; 2.28)

1.00

0.93

0.927

 Small containers

60.9% (42)

47.3% (35)

57.1% (40)

63.0% (46)

 

No: 123 (43.0)

Yes: 163 (57.0)

2.15 (1.98; 2.33)

2.19 (2.02; 2.38)

1.00

1.02

0.728

 Barrel

4.3% (3)

5.4% (4)

7.1% (5)

11.0% (8)

 

No: 266 (93.0)

Yes: 20 (7.0)

2.16 (2.03; 2.29)

2.45 (1.98; 3.02)

1.00

1.14

0.27

Resides in direction of prevailing wind from IP, % (n)b

14.0% (12)

14.9% (13)

23.3% (20)

28.7% (25)

0.046

No: 276 (79.8)

Yes: 70 (20.2)

2.11 (1.99; 2.24)

2.44 (2.16; 2.74)

1.00

1.16

0.03

Resides within 10 km from IPa, % (n)b

7.2% (6)

5.8% (5)

9.5% (8)

8.3% (7)

0.827

No: 311 (92.3)

Yes: 26 (7.7)

2.16 (2.05; 2.29)

2.24 (1.85; 2.71)

1.00

1.03

0.741

Delivery in fall or winter, % (n)b,c

68.6 (59)

64.4 (56)

75.6 (65)

82.5 (71)

0.056

No: 95 (24.5)

Yes: 251 (72.5)

2.00 (1.83; 2.19)

2.24 (2.10; 2.39)

1.00

1.12

0.06

  1. aNumber of available questionnaires.
  2. bData derived from a database for all subjects.
  3. cFall and winter period was defined as months from September through February.