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Table 2 Demographic details of phase 2 co-design workshop participants

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

Trial acronym, ISRCTN, title

Co-design participants

Target behaviour


A UK multicentre RCT evaluating the male synthetic sling versus Artificial urinary Sphincter Trial for men with urodynamic stress incontinence (USI) after prostate surgery

n = 2 (males, 56 years and 72 years)

Return of postal questionnaire

At 12 and 24 months post-randomisation


A UK online RCT of the effects of digital cognitive behavioural therapy (CBT) for insomnia on cognitive function

n = 1 (female, 56 years)

Online return of questionnaires

10 and 24 weeks post-randomisation


A UK multicentre RCT investigating the best dental recall interval for optimum, cost-effective maintenance of oral health in dentate adults attending dental primary care

n = 4 [2 females (65 years, 71 years), 2 males (58 years, 65 years)]

Return of postal

questionnaires and

clinic visits

- Questionnaire: 3, 6, 12, and 24 months post-randomisation

- Clinic visit: 6 months, 24 months, risk-based recall

Various trials in relation to women’s health

n = 1 (female, 38 years)

Return of postal questionnaires and clinic visits. Timing unknown

  1. *All participants had been a participant in a trial in the preceding 12 months