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Number of subjects by proxy/non-proxy, PCE-exposed/unexposed, and case/control status.
| Non-Proxy Subjects | Proxy Subjects | Total Subjects | |
| PCE-exposed | 189 | 102 | 291 |
| Cases | 101 | 54 | 155 |
| Controls | 88 | 48 | 136 |
| Unexposed | 696 | 301 | 997 |
| Cases | 360 | 157 | 517 |
| Controls | 336 | 144 | 480 |
| Total | 885 | 403 | 1288 |
| Cases | 461 | 211 | 672 |
| Controls | 424 | 192 | 616 |
