Inconsistent Counselor Fidelity in Delivering an Evidence-Based Adherence Intervention During a PrEP Trial.

Evidence-based adherence counseling interventions must be delivered with fidelity to ensure that their effectiveness is retained, but little is known regarding how counselors in biomedical HIV trials deliver these interventions. Forty-two counselors from the MTN-025/HOPE Study, which was conducted in 14 sites in sub-Saharan Africa, participated. They completed a quantitative assessment and consented for their HOPE counseling session ratings to be analyzed. Twenty-two (52%) self-identified as research nurses and 20 (48%) as counselors. Of 928 session ratings, 609 (66%) were classified as Good, 188 (20%) as Fair, and 131 (14%) as Poor, based on pre-established criteria. Overall mean ratings for session tasks and global components (each rated from 1 to 5) were 4.12 (SD = 0.45; range 2.46-4.73) and 4.02 (SD = 0.64; range 1.75-4.79), respectively. Twenty-six (62%) counselors attained Good or Fair ratings on at least 85% of their sessions, but 33% of counselors had more than 25% of their sessions rated as Poor; three counselors (7%) never met criteria for a Good session. Even after extensive training, counselors' fidelity to the intervention varied. Our findings highlight the value of fidelity monitoring using session audio-recordings, the importance of ongoing coaching and support, and the need to plan for counselors with consistently poor fidelity.