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Table 1 Distributions of maternal age, education, socioeconomic status and arsenic exposure by outcome (fetal loss and infant death vs. surviving and migration-out), Matlab, Bangladesh, 1991-2000

From: Spatial patterns of fetal loss and infant death in an arsenic-affected area in Bangladesh

Variables

Fetal loss and infant death

Live infants and migration-out

Total

 

N

%

N

%

N

%

Age categories, yearsa2 = 143.2, ρ < 0.001)

< 20

20-24

25-29

30-34

> = 35

476

1037

1044

582

526

17

13

12

12

20

2276

7151

7594

4127

2159

83

87

88

88

80

2752

8188

8638

4709

2685

10

30

32

18

10

Educationb2 = 12.0, ρ = 0.007)

No education

Primary

Secondary

Higher

1933

1032

655

45

14

13

12

12

11519

6825

4626

337

86

87

88

88

13452

7857

5281

382

50

29

20

1

Household assets score quintiles (χ2 = 15.5, ρ = 0.004)

1 (poor)

2

3

4

5 (rich)

668

839

747

741

670

14

15

14

13

13

3975

4875

4775

5107

4575

86

85

86

87

87

4643

5714

5522

5848

5245

17

21

21

22

19

Arsenic concentration in tube-well waterc (μg/L) (χ2 = 24.4, ρ < 0.001)

< 10

10-49

50-199

200-299

300-399

400-499

> = 500

652

209

672

720

588

406

418

12

12

14

14

15

15

14

4684

1572

4302

4386

3361

2327

2675

88

88

86

86

85

85

86

5336

1781

4974

5106

3949

2733

3093

20

7

18

19

15

10

11

Year of pregnancy outcomes (χ2 = 21.9, ρ < 0.001)

1991-1992

1993-1994

1995-1996

1997-1998

1999-2000

637

679

682

784

883

15

15

13

13

13

3495

4002

4530

5274

6006

85

85

83

83

83

4132

4681

5212

6058

6889

15

17

19

23

26

  1. a Age at pregnancy in years, mean: 27 (SD: 5.8), median: 26 and inter-quartile range: 23-31
  2. b Mothers education in years, mean: 2.9 (SD: 3.4), median: 1.0 and inter-quartile range: 00-5.0
  3. c Arsenic exposure during pregnancy in μg/L, mean: 241 (SD: 209), median: 226 and inter-quartile range: 38-373