Table 2.

Consent

What	When	Who obtains consent?	Comments
Oral consent for interview	Baseline recontact interview	Interviewer	Recorded by interviewer in questionnaire
Oral consent to be recontacted in future to assist with research (not-specific)	Baseline recontact interview	Interviewer	Recorded by interviewer in questionnaire
Expression of interest in health check following brief description of health check- copy of which to be left with participants	Baseline recontact interview	Interviewer	NOT consent per se, but indication of whether interested in taking part and if so, contact details (telephone number)
Signed consent for health check procedures	Health check	Doctor	Participants given information on BP and anthropometry and questionnaire, and blood taking
Signed consent to take part in active intervention arm of MI trial	Health check	Doctor	For subset of participants who are eligible, randomized to intervention arm of trial, and turn up for health check. Note, no explicit consent for being in control arm, beyond oral recontact agreement