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Table 4 Part-worth utilities (zero-centered values)a of PrEP program attributes and level choices, stratified by PrEP experience

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 Total sample (n = 429) PrEP-experienced (n = 357) No PrEP experience (n = 72)
Dosing method
 Daily tablet 21.75 18.85 36.13
 PrEP injection 15.58 7.81 54.14
 PrEP implant 14.05 8.44 41.82
 On-demand regimen 8.99 13.93 −15.51
 PrEP rectal douche −60.37 −49.03 − 116.59
Provider type
 Military 5.55 6.20 2.33
 Civilian −5.55 −6.20 −2.33
PrEP visit location
 Smartphone 7.69 7.72 7.53
 On-base 2.45 3.10 −0.81
 Off-base −10.13 −10.82 −6.73
Lab evaluation location
 Provide labs on-base 12.65 12.16 15.09
 Provide labs off-base −9.68 −9.09 −12.60
 Home-based mail-in kit −2.97 −3.07 − 2.49
PrEP dispensing venue
 Receive PrEP on-base 12.66 13.15 10.23
 Receive PrEP off-base −8.42 −8.89 −6.11
 Receive PrEP by mail −4.23 −4.26 −4.11
 None b −54.7 −53.70 −59.63
  1. aZero-centered part-worth utility scores imply the positive or negative magnitude of the participant’s preference for the level choice in relation to the other level options within the same attribute
  2. bThe “None” parameter represents the positive or negative magnitude in which a respondent is likely to select “None” (not willing to take PrEP in any scenario despite program configuration)
  3. PrEP pre-exposure prophylaxis