Table 1.

Study methods

Method	N	Eligibility criteria	Relevant topics addressed
Cross-sectional survey*	740	Age 18–24	Contraception used at last sexual intercourse and source
		Literate	Demographic and behavioural characteristics
		Have their own mobile phone (with them at time of recruitment) and report regular use
		Report current use of text messaging
Focus group discussions*	6	Age 18–24	Sources of contraception for young people
	(58 participants)	Community members	Characteristics of young people who use each source
In-depth interviews	18	Age 18–24	Reasons for having purchased contraception from pharmacy
		Recently purchased contraception at pharmacy	What was valued (and not valued) about experience
Key-informant interviews		Age 18+	Characteristics of young people who purchase contraception
	19 (pharmacy personnel)	Pharmacy personnel (any role) OR	What clients appreciate about experience
	6 (stakeholders)	Pharmacy-related stakeholder (Ministry of Health; regulatory agency; professional association; non-governmental organisation)

*Methods which were nested in the broader ARMADILLO study, a digital health intervention randomised controlled trial. Inclusion/exclusion criteria for these nested methods were determined by ARMADILLO’s objectives.