Abstract
Methods Participants in one of the three study centres were alternately allocated to either be telephoned 2-7 days before sending an 8-month follow-up questionnaire by post or email, or to be sent the questionnaire without pre-calling. All participants received up to five questionnaire completion reminders. The primary outcome was completion of the PHQ-9 outcome. Secondary outcomes were number of reminders and time to questionnaire completion.
Highlights
Advance notification may increase response to follow-up questionnaires among trial participants, but the benefit of this resource-intensive activity remains uncertain
This study investigated the effectiveness of pre-calling participants with depression ahead of follow-up in The Healthlines Study, a trial of a telehealth intervention
201 participants were included in the nested study (100 to pre-calling), of a total of 609 in the Healthlines depression trial
Summary
Advance telephone notification of follow-up in the healthlines study: a nested study of patients with depression. From 3rd International Clinical Trials Methodology Conference Glasgow, UK. From 3rd International Clinical Trials Methodology Conference Glasgow, UK. 16-17 November 2015
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