Table 4.
Effectiveness of mail strategies
| Mail-out strategy | Initial Contacts (total mailed) |
Number of calls into VOXCO N (% callers out of total mailed) |
Contacts who ended up enrolling in the study | ||
|---|---|---|---|---|---|
| N | % enrolled out of total mailed | % enrolled from total number of calls | |||
| All mail strategies | 176,822 | 6384 (3.61%) | 1358 | 0.768% | 21.3% |
| Canada Post mail-out | 122,000 | 300 (0.246%) | 198 | 0.162% | 66.0% |
| Coronary angiogram registry | 4780 | 4780 (100%)a | 630 | 13.2% | 13.2% |
| Contact after hospital discharge | 50,042 | 1304 (2.61%) | 530 | 1.06% | 40.6% |
aThis strategy was unique in that we actively called all contacts, rather than simply providing them with the survey unit phone number