Dimensional Reduction in Barriers and Facilitators to Pre-exposure Prophylaxis (prep) Uptake Willingness for Full-Service Sex Workers.

Full-Service Sex Workers (FSSWs) face heightened risk of acquiring HIV, yet exhibit relatively low adoption of pre-exposure prophylaxis (PrEP)-an antiviral that substantially reduces HIV acquisition risk. Little work examines barriers and facilitators to PrEP uptake willingness among FSSWs. This study aimed to identify the distinct components of barriers and facilitators to PrEP uptake willingness for FSSWs. Here, we subjected 19 PrEP barriers and facilitators identified in the literature to a principal component analysis (PCA) among a sample of 83 FSSWs. Preliminary statistics supported factorability of data. PCA revealed three distinct components of barriers and facilitators that explained 62.80% of the total variance in survey responses. We labeled these components Behavioral and Social Concerns (alpha = 0.93), Access and Affordability (alpha = 0.67), and Biologically Based Health Concerns (alpha = 0.79). This study shows promise for future clinical and research utility of these factors and provides a basis for future psychometric studies of barriers and facilitators to PrEP uptake willingness among FSSWs.