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Table 6 Results of phase 3 questionnaire assessing acceptability of interventions

From: The development of theory-informed participant-centred interventions to maximise participant retention in randomised controlled trials

Questions Intervention deliverers: trial staff (n = 9)
group median
Intervention receivers/regulators: trial participants and REC members (n = 9)
group median
Improving retention of participants in clinical trials is something I care about Strongly agree  
I have a role to play in helping to improving retention of participants in clinical trials Strongly agree  
Motivational information
How likely is the intervention will improve retention?
(TFA construct: perceived effectiveness)
Somewhat likely Extremely likely
How do you feel about delivering/receiving the intervention?
(TFA construct: affective attitude)
Strongly likely Likely
How much effort would be required to deliver/engage with the intervention?
(TFA construct: burden)
Some effort A little effort
Do you think delivering/engaging with this intervention would interfere with other things you need to do?
(TFA construct: opportunity cost)
Disagree Slightly
How confident are you that you will be able to deliver/engage with this intervention?
(TFA construct: self-efficacy)
Very Confident
Is it clear to you how the intervention would be delivered and received/how it might encourage participants to improve questionnaire return or clinic attendance?
(TFA construct: intervention coherence)
Clear to very clear Somewhat
How likely is it that you would use this intervention in practice?
(TFA construct: intervention coherence)
Very likely
Do you think it will be ethical to use this intervention?
(TFA construct: ethicality)
Strongly Agree
Goal setting
How likely is the intervention will improve retention?
(TFA construct: perceived effectiveness)
Somewhat likely Likely
How do you feel about delivering/receiving the intervention?
(TFA construct: affective attitude)
Likely Likely
How much effort would be required to deliver/engage with the intervention?
(TFA construct: burden)
A lot of effort Huge effort
Do you think delivering this intervention would interfere with other things you need to do?
(TFA construct: opportunity cost)
No opinion Moderately
How confident are you that you will be able to deliver/engage with this intervention?
(TFA construct: self-efficacy)
Somewhat Confident
Is it clear to you how the intervention would be delivered and received and how it would work to improve questionnaire return or clinic attendance?
(TFA construct: intervention coherence)
Somewhat unclear/clear Somewhat
How likely is it that you would use this intervention in practice?
(TFA construct: intervention coherence)
Likely
Do you think it will be ethical to use this intervention?
(TFA construct: ethicality)
Agree
  1. – = question not asked to this group