Response among cases and controls
| Cases | Controls | |
|---|---|---|
| *This excludes three cases whose diagnosis was uncertain, and five cases and 24 controls who lived outside the study area. | ||
| †Too ill/died (cases and controls not included in denominator). | ||
| Potentially eligible subjects identified* | 461 | 817 |
| Too ill/died (%) | 213 (46.2) | 108 (13.2) |
| Refused/non-responders (%) | 44 (9.5) | 370 (45.3) |
| Included | 204 | 339 |
| Response (%) | ||
| Response among potentially eligible subjects | 44.3 | 41.5 |
| Response among eligible subjects† | 82.3 | 47.8 |