Cluster randomised SWAT to investigate whether a video link in the participant information sheet (PIS) increases recruitment and retention, compared to a PIS without this link

This SWAT is embedded within the MOOSE trial IRAS1006576 ISRCTN 14403521, with the objective of determining whether inclusion of a video link in the participant information sheet (PIS) with trial information including an explanation of what the methotrexate injection would comprise of, increases recruitment and retention compared to a PIS without the link.