Volume 11, Number 5—May 2005
Dispatch
Emergency Survey Methods in Acute Cryptosporidiosis Outbreak
Table
Utilization of CATI system for case-control study*
Characteristic | Case-patients | Controls |
---|---|---|
Interview period | Sep 15–Sep 29 | Sep 28–Oct 21 |
No. enrolled | 151 | 302 |
No. calls made | 1,357 | 10,101 |
No. refusals | 56 | 330 |
Average interview length (min) | 28 | 16 |
Interviewer hours | 263 | 508 |
*CATI, computer-assisted telephone interview.
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