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Table 1 Selected characteristics of participants in relation to vital status, age at baseline, sex, education year, exposure and SES

From: A prospective cohort study of stroke mortality and arsenic in drinking water in Bangladeshi adults

Variables

Baseline arsenic in well water

Baseline cohort, N=61,074

Stroke deaths, N=1,033

Crude death rate per 1,000 person-years

P value

 

Mean

SD

n

%

N

%

  

Age

18-30

164.2

182.4

18,927

31.0%

5

.5%

0.04

<0.0001

31-60

161.9

180.4

32,963

54.0%

187

18.1%

0.76

+60

162.9

178.9

9,184

15.0%

841

81.4%

14.41

Sex

Male

162.1

179.5

25,967

42.5%

503

48.7%

2.92

<0.001

Female

163.3

181.8

35,107

57.5%

530

51.3%

2.13

Education

0

169.8

181.6

23,771

38.9%

639

61.9%

3.7

<0.001

1-5

167.5

183.5

18,810

30.8%

272

26.3%

1.1

+6

149.0

176.3

18,493

30.3%

122

11.8%

0.7

SES

1

183.2

186.1

9,039

14.8%

142

13.7%

2.2

<0.50

2

170.3

181.1

10,741

17.6%

188

18.2%

2.5

3

167.9

183.6

12,687

20.8%

232

22.5%

2.7

4

164.5

178.2

13,445

22.0%

213

20.6%

2.3

5

139.6

174.8

15,162

24.8%

258

25.0%

2.5

Baseline arsenic exposure

<10

1.7

2.0

5,566

9.1%

62

6.0%

1.6

<0.05

10-49

21.1

7.2

22,686

37.1%

375

36.3%

2.4

+50

102.2

30.5

32,822

53.7%

596

57.7%

2.6

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