Table 1.
Louisiana | Michigan | New Jersey | Total | |
---|---|---|---|---|
Total in sampling frame | 846 | 747 | 1155 | 2748 |
Out of scope | ||||
Deceased | 271 | 126 | 358 | 755 |
Othera | 38 | 93 | 132 | 263 |
Study participation | ||||
Enrolled | 159 | 154 | 168 | 481 |
Refused: active or passive | 378 | 374 | 497 | 1249 |
Response rateb | 30% | 29% | 25% | 28% |
Chart abstraction participation | ||||
Enrolled | 156 | 130 | 114 | 400 |
Refused: active or passive | 381 | 398 | 551 | 1330 |
Response rateb | 29% | 25% | 17% | 23% |
Other ineligibility includes participating in another study, unable to locate mailing address, missing information, diagnosis determined to be ineligible, language barrier, or physician refused.
Response rate is (no. of enrolled)/(no. of enrolled + no. of refused).