Table 1. FGD and interview topics for investigation in the choice period.

FGD guide topics	Discussion points
Product choice/preference • Process of decision making • What participants think about at choosing	• What they thought about each product before choosing a product. What were their feelings? • Everyone got to choose between using the ring or pill or choosing neither; what were their thoughts about when making a decision? • What influenced them to choose one product over the other? • What their peers would choose if given a choice?
Adherence support	• Whether the adherence support provided helped use the chosen product well. • How did the adherence support differ during crossover and choice periods?
Study acceptability and experience with product use	• Experience using chosen products. • How products fit in their daily life? • Any challenges with the chosen product? • What made it easier to use the chosen product? • What made it harder to use the chosen product? • Influence from social circles like friends, partners, and family members. • What people in the study said about the products
IDIs included the topics above and, additionally the topics below.
Future plans	How their future plans fit in preserving their health and choosing products to keep them healthy