Fig. 1

Example of DCE programmatic scenario task [47]. Note To inform participant’s choice of potentially unfamiliar products, interviewers showed pictures and descriptions of options before moving forward with the DCE. Photos are adapted from the National Institute of Allergy and Infectious Diseases (NIAID) “Long-Acting Forms of HIV Prevention” infographic [47]. Abbreviations DCE = Discrete Choice Experiment; PrEP = HIV pre-exposure prophylaxis