Table 1 Booster Study research activities and timescale
−4 months | −3 months | −2 months | −1 month | −1 week | Main trial start | 1 month | 2 months | 3 months | 9 months | |
|---|---|---|---|---|---|---|---|---|---|---|
Invitation letter sent | ✔ | |||||||||
Interested individuals contact and screened for brief intervention eligibility | ✔ | |||||||||
Eligible participants are sent brief intervention | ✔ | |||||||||
Participant contacted for DVD use assessment | ✔ | ✔ | ||||||||
Participant contacted and screened for main trial eligibility | ✔ | |||||||||
Face-to-face appointment, consent, baseline assessment and randomisation | ✔ | |||||||||
Participant receives motivational interviewing (excludes control group) | ✔ | ✔ | ||||||||
Face-to-face follow-up appointment | ✔ | |||||||||
Face-to-face follow-up appointment | ✔ |