While this is not an intervention, there will be separate participants for the survey study and for the other components of the study (focus groups, interviews, conjoint analysis, piloting the vignettes

we will conduct a 20 question quantitative survey of a nationally representative sample of people living with HIV asking about specific study payment information and scenarios

focus groups, and key informant interviews will be used to characterize key stakeholders' (people aging with HIV, IRB members, researchers) views on and assessment of incentives, with qualitative analysis of text done using RaDAR. We will use Conjoint Analysis (CJA) to estimate the relative importance (also called "weight") that participants place on each study characteristic when choosing between different hypothetical studies.

We will develop HIV related vignettes (hypothetical scenarios) utilizing the data from outcomes 1 and 2. Specifically, once we have 6 to 8 study characteristics from Aim 2, and the final number of choices (2 - 3) per characteristic, we will use a factorial design to create 25 vignettes (hypothetical scenarios). Individuals from each group (i.e., study participants, researchers, and IRB members) will select the most appropriate incentive from a list of possibilities based on various scenarios. These vignettes will be based on studies identified in the literature and a review of consent forms and created in conjunction with the external advisory board (including pre-testing and revision prior to finalization).