Table 4

Negative binomial regression results for stroke, and comparison of Hudson River to "clean" zip codes.

Exposure
Rate Ratio
95% Confidence Interval

A. Ischemic Stroke
"POPs" zip codes
1.17
1.04
1.39
"Other waste" zip codes
1.14
1.01
1.28
"Clean" zip codes*
1.00
1.00
1.00
B. Hemorrhagic Stroke
"POPs" zip codes
1.10
0.99
1.22
"Other waste" zip codes
1.04
0.93
1.16
"Clean" zip codes*
1.00
1.00
1.00
C. Subset of Hudson River zip codes
Hudson River zip codes
1.20
1.10
1.32
"Clean" zip codes*
1.00
1.00
1.00

* Zip codes with no identified hazardous waste sites (reference)

† Zip codes along the PCB-contaminated portion of the Hudson River

Shcherbatykh et al. Environmental Health: A Global Access Science Source 2005 4:18   doi:10.1186/1476-069X-4-18