Pilot implementation of short message service for randomisation in a multisite pragmatic factorial clinical trial in Kenya

Table 1 SMS formulation syntax of a randomisation request

Type of message	Input parameter formats	Example text
A request to randomise a participant in each stratum at a trial site in a multisite clinical trial	Randomise [IPNO] to [study name] [sitename] [stratum name]	{Randomise RL567 to SEARCH MKSRT supportive} RL567 – IPNO^a SEARCH – Study name MKSRT – Site name Supportive – stratum
A request to randomise a participant in each site (not stratified) in a multisite clinical trial	Randomise [IPNO] to [Study name] [sitename]	{Randomise KL789 to SEARCH MMLY} KL789 – IPNO SEARCH – study name MMLY – site name

^aThe unique patient identifier primarily assigned to a patient at the public hospital

ISSN: 2055-5784