Contact Strategy by Experimental Group During the Five-Week Web-Only Period
| . | Week 1 (invite) . | Week 2 . | Week 3 . | Week 4 . | Week 5 . | n . |
|---|---|---|---|---|---|---|
| Control | Letter + email | Letter + email | Letter + email | 284 | ||
| Invite | Letter + email + SMS | Letter + email | Letter + email | 261 | ||
| Reminders | Letter + email | Letter + email + SMS | Letter + email + SMS | 270 | ||
| Invite and reminders | Letter + email + SMS | Letter + email + SMS | Letter + email + SMS | 250 |
| . | Week 1 (invite) . | Week 2 . | Week 3 . | Week 4 . | Week 5 . | n . |
|---|---|---|---|---|---|---|
| Control | Letter + email | Letter + email | Letter + email | 284 | ||
| Invite | Letter + email + SMS | Letter + email | Letter + email | 261 | ||
| Reminders | Letter + email | Letter + email + SMS | Letter + email + SMS | 270 | ||
| Invite and reminders | Letter + email + SMS | Letter + email + SMS | Letter + email + SMS | 250 |
Note.—The n refers to the number of eligible adults who had provided a mobile number in the previous waves from the CAPI-only group.
Contact Strategy by Experimental Group During the Five-Week Web-Only Period
| . | Week 1 (invite) . | Week 2 . | Week 3 . | Week 4 . | Week 5 . | n . |
|---|---|---|---|---|---|---|
| Control | Letter + email | Letter + email | Letter + email | 284 | ||
| Invite | Letter + email + SMS | Letter + email | Letter + email | 261 | ||
| Reminders | Letter + email | Letter + email + SMS | Letter + email + SMS | 270 | ||
| Invite and reminders | Letter + email + SMS | Letter + email + SMS | Letter + email + SMS | 250 |
| . | Week 1 (invite) . | Week 2 . | Week 3 . | Week 4 . | Week 5 . | n . |
|---|---|---|---|---|---|---|
| Control | Letter + email | Letter + email | Letter + email | 284 | ||
| Invite | Letter + email + SMS | Letter + email | Letter + email | 261 | ||
| Reminders | Letter + email | Letter + email + SMS | Letter + email + SMS | 270 | ||
| Invite and reminders | Letter + email + SMS | Letter + email + SMS | Letter + email + SMS | 250 |
Note.—The n refers to the number of eligible adults who had provided a mobile number in the previous waves from the CAPI-only group.
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