Homework Answers
|
Had methane exposure |
dermitis |
no dermitis |
Total |
Cumulative Incidence |
|
Yes |
30 |
120 |
160 |
30/160= 0.185 |
|
No |
10 |
150 |
160 |
10/160 =0.0625 |
where CIe is the cumulative incidence in the 'exposed' group and CIu is the cumulative incidence in the 'unexposed' group.
0.185 /0.0625 = 2.96
- A risk ratio > 1 suggests an increased risk of that outcome in the exposed group.
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