Personalised versus standard text message prompts for increasing trial participant response to telephone follow-up: an embedded randomised controlled retention trial.

"Declarations Ethics approval and consent to participateThe SWAT received ethical approval from Liverpool Central NRES Committee (REC reference 18/NW/0758). Consent was taken as part of the host trial (MAGIC – ISRCTN 18296119). Consent for publicationNot applicable Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding This work was funded by the Medical Research Council – PROMETHEUS Group (MRC Grant Number: MR/R013748/1). The funding body had no role in the design of the study of collection, analysis, and interpretation of data or in writing the manuscript. The host trial MAGIC was funded by the NIHR Health Technology Assessment programme (HTA 16/80/08). The views expressed are those of the authors and not necessarily those of the NIHR or the Department of Health and Social Care."

"Trial Registration ISRCTN 18296119, SWAT 35 (MRC Northern Ireland Network for Trials Methodology Network)."