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Table 2 Factors affecting recruitment in randomised controlled trials, adapted from Team et al. 2018

From: Stakeholder perspectives on barriers and enablers to recruiting anxious children undergoing day surgery under general anaesthetic: a qualitative internal pilot study of the MAGIC randomised controlled trial

Type of factor

Working definition

Study-related factors

Design of the study, specific intervention, and attitudes and behaviours of the central trial team (in multi-site studies)

Participant-related factors

Attitudes, behaviours and capabilities of potential participants and parents (in paediatric studies)

Practitioner-related factors

Attitudes, behaviours and capabilities of clinicians and other healthcare professionals involved in recruitment

Ethics-related factors

Ethical considerations of practitioners that impact on recruitment

Collaboration-related factors

Collaboration with other healthcare professionals not directly involved in recruitment

Setting-related factors

Layout, logistical arrangements and resources of the specific sites involved

Context-related factors

Broader health speciality context in which the study was carried out

Health system-related factors

Health system in which the study took place, and the responsibilities of clinicians and research nurses within this