Table 1.

Examples of interview guide questions rooted in the Information-Motivation-Behavioral Skills Model

Model domains	Example interview guide questions
Information	Q. What are ways that you can protect yourself from HIV?
	Q. How would you describe PrEP to a person who has never heard about it before?
	Probe: Who do you think would benefit the most from using PrEP? Why?
	Probe: What doesn’t PrEP do for a person?
Motivation	Q. Can you share with me some of the reasons why you were initially interested in PrEP?
	Probe: What elements helped you to decide to take PrEP?
	Probe: Information, meeting the staff, family, friends?
	Probe: How did you feel about PrEP when you first started?
	Probe: Have your feelings about PrEP changed since you started?
	Q. Have you ever had two or more unopened bottles of PrEP, but continued to come to collect more? Why?
	Probe: What are the reasons you sometimes collect and keep your PrEP, but don’t take it?
Behavioral skills	Q. You have now been on PrEP for _____ months and we want to learn more about your experience while using PrEP
	Probe: Are there any activities that might affect you from taking PrEP every day? What are these?
	Probe: What are ways that you remind yourself to take it? Describe things that would make it easier for you, and other young women, to take PrEP in the future
	Q. You were assigned to the [one-on-one or group adherence counselling arm], can you share with me some of your experiences in your sessions?
	Probe: Can you provide an example of a time when you applied what you learned in the sessions in real life? Why?