| Initial Exposure Status* | ||
---|---|---|---|
 | Number Exposed | Number Unexposed | Total Number |
Selected | 1,492 | 1,704 | 3,196 |
Excluded during Enrollment | Â | Â | Â |
   Never located | 132 | 136 | 268 |
   No response | 245 | 336 | 581 |
   Ineligible or Deceased | 7 | 8 | 15 |
   Refusal | 149 | 137 | 286 |
Returned Questionnaire | 959 | 1,087 | 2,046 |
% of selected | 64.3% | 63.8% | 64.0% |
% of located | 70.5% | 69.3% | 69.9% |