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Table 1 Description of conjoint survey attributes and associated level options presented to respondents

From: Preferences for pre-exposure prophylaxis among U.S. military men who have sex with men: results of an adaptive choice based conjoint analysis study

Attributes and levels

Survey description

Dosing method

 Daily oral tablet

Daily oral tablet means that you would have to take an oral tablet every day (daily) to maintain a protective level of PrEP medication

 PrEP injection

PrEP injection means that you get an injection or shot that would provide a protective level of PrEP medication for 2 months

 PrEP implant

PrEP implant means that you would get a small implant that would slowly release a protective level of PrEP medication for at least a year

 On-demand regimen

On-demand regimen means you take two tablets 24 h before sex and then one tablet daily for the next two days. This dosing method would protect you from HIV for that single sexual encounter only

 PrEP rectal douche

Rectal PrEP douche means that you would use a rectal douche or enema prior to having sex that leaves behind protective level of PrEP medication for that sexual encounter

Provider type

 Military

Military provider means that you prefer a medical visit with a healthcare provider that is a member of the military

 Civilian

Civilian provider means that you prefer a medical visit with a healthcare provider that is a civilian or not a member of the military

PrEP visit location

 Smartphone

Smartphone/mobile app visit means that you prefer to have a virtual medical visit with a healthcare provider through a smartphone call or mobile app

 On-base

On-base medical visit means that you prefer an in-person medical visit with a healthcare provider that is in a clinic on-base

 Off-base

Off-base medical visit means that you prefer an in-person medical visit with a healthcare provider that is in a clinic off-base

Lab evaluation location

 Provide labs on-base

Provide lab work on-base means that you prefer to do you lab work at a laboratory or clinic on-base

 Provide labs off-base

Provide lab work off-base means that you prefer to do you lab work at a laboratory or clinic off-base

 Home-based mail-in kit

Home-based mail-in kit means that you prefer to receive a home-based lab testing kit in the mail. You will provide self-collected, small samples of blood and urine and mail the kit back to the laboratory for evaluation. Your PrEP provider would then see the lab results after processing

PrEP dispensing venue

 Receive PrEP on-base

Receive PrEP on-base means that you prefer to pick up or receive your PrEP medication from a pharmacy/clinic on-base

 Receive PrEP off-base

Receive PrEP off-base means that you prefer to pick up or receive your PrEP medication from a pharmacy/clinic off-base

 Receive PrEP by mail

Receive PrEP by mail delivery means that you prefer to receive your PrEP medication in the mail at your home or APO

  1. PrEP pre-exposure prophylaxis, APO Army Post Office