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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