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 | Â |