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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