Table 1.

Literature summary on discrete choice experiments applied to PreP

Study	Country	Target population	n	Mode of administration	Attributes and levels
Minnis et al24	South Africa	sexually active, PrEP-naive youth	807	Face to face	Five attributes: form, dosing frequency, access, pain, and insertion site. Across all groups, duration of effectiveness was the most important attribute, with strong preference for less frequent dosing.
Dubov et al25	USA	MSM	554	Not explicit	Five attributes related to PrEP administration: dosing frequency, dispensing venue, prescription practices, adherence support and costs.
Kuteesa et al26	Uganda	HIV-negative members of fshing communities	713	Face to face	Product attributes were: HIV prevention effectiveness, sexually transmitted infection (STI) prevention, contraception, waiting time and secrecy of use.
Lancaster et al27	Malawi	Female sex workers	150	Face to face	Final attributes included: dispensing location (STI clinic, family planning clinic, ART clinic, NGO-run drop-in centre, NGO-run mobile outreach), clinic wait time (1 hour, 2 hours, 3 hours), provider gender (male or female), frequency of pick-up (1 month, 2 months or 3 months) and provision of additional services (risk counselling, cervical cancer screening, pregnancy testing or contraceptives). Dispensing location was most preferred, followed by the provision of additional services. Women preferred receiving PrEP at family planning clinics or NGO run drop-in centres.
Dubov et al28	Ukraine	MSM	1184	Online	Five attributes related to PrEP administration: dosing frequency, dispensing venue, prescription practices, adherence support and costs.

ART, antiretroviral therapy; MSM, men who have sex with men; NGO, non-governmental organisation; PrEP, pre-exposure prophylaxis.