Table 3.

Change method core components and classification

Study Author	Implementation Strategy Name	Core Components	ERIC Domain	ERIC Strategy
Bartholomew et al.	Incorporate PrEP into mobile SSP unit	Delivery of MOUD and PrEP at a mobile SSP	Change Infrastructure	Change Service Site
Roth et al.	Project SHE	Integrating PrEP within SSP	Change Infrastructure	Change Service Site
Study Author	Adjunctive Intervention Name	Core Components	TDF Domain	COM-B
Meyer et al.	Patient-centered PrEP decision aid	1. Discussion on the pros and cons of using PrEP related to other prevention strategies 2. Addressing domains identified as important to women with substance use disorders, including PrEP’s efficacy, cost, side effects, medication interactions, insurance coverage, and need for disclosure to partners.	Kn, Sk, BaCo, ECR	Psychological Capability, Reflective Motivation, Physical Opportunity
Richterman et al.	reSET-O	Mobile phone app that provides cognitive behavioral therapy (CBT) lessons, skill-building exercises, and contingency management in the form of small-value gift cards.	Kn, Sk, Re, BR	Psychological Capability, Automatic Reinforcement
Shrestha et al.	CHRP-BB	Group-based delivery across four 50-minute meetings. Sessions included the following topics: 1. Making the most of PrEP as an active health manager 2. Reducing drug risk and taking PrEP; 3. PrEP adherence and sex risk reduction strategies; 4. Negotiating partner support for HIV prevention	Kn, Sk, BaCa, BaCo, MADP, ECR, BR	Psychological Capability, Reflective Motivation, Physical Opportunity

Note: TDF abbreviations: Kn = Knowledge, Sk = Skills, BaCa = Beliefs about Capabilities, BaCo = Beliefs about Consequences,

Re = Reinforcement, MADP = Memory, Attention, and Decision Processes, ECR = Environmental Context and Resources,

SI = Social Influences, Em = Emotion, BR = Behavioral Regulation