Table 2.

Explanatory themes by theoretical domain

TDF domain	Domain description	Theme	Groups endorsing theme1			Facilitator2	Barrier2
			Duke	Metro	UH
Knowledge	Discussions of CVD risk including scientific rationale for risk factors and prevention, procedural knowledge of CVD risk identification and management (including self-management), and discussion of associated knowledge sources	HIV as a risk factor for CVD	1, 2	1, 2	1, 2	X
		Multiple sources of CVD-related information	2		2	X
		Translating knowledge of discrete diagnoses and behaviors into composite CVD risk	2§	1, 2	1		X
		CVD-related medications and their mechanisms of action	1	1, 2	1, 2		X
Environmental Context and Resources	Discussion of environmental stressors, organizational culture or climate, salient critical events. or other incidents influencing goals or processes related to CVD	Co-located services	1	1	1	X—access to resources	X—bottlenecks in clinic flow
		Social determinants of health	1, 2	1	1, 2	X—health insurance3	X—transportation4
		Frequency of care to manage non-HIV conditions	1	1	1		X
Beliefs about Capabilities	Reflections on self-confidence, perceived competence, self-efficacy, self-esteem, perceived behavioral control, empowerment, and/or professional confidence in identifying and managing CVD	CVD complexity	1	1	1	X
		Locus of control in preventing and managing CVD		2	2		X
Memory, Attention, and Decision Processes	Description of what CVD-related factors individuals choose what to pay attention to and what they ignore, including discussions of competing demands, cognitive overload, burnout. or decisional aids to support CVD-related behaviors	Tools to aid CVD prevention	1, 2	1, 2	2	X—tools for CVD risk estimation4, medication reminders3	X—tools to motivate lifestyle modifications3
		HIV is our priority	1, 2§	1, 2	1, 2		X
Behavioral Regulation	Reflections on the use of objective measurements to make changes in CVD-related risks or behaviors	Self-monitoring practices	2	2	2	X—the value of self-monitoring	X—symptom guided self-management
Beliefs about Consequences	Discussion of outcomes, anticipated regrets. or other consequences associated with CVD (risk or disease) or CVD- related behaviors	Medication burden; subtheme: past experiences with CVD medication side effects	1, 2	1, 2	1, 2
Social and Professional Roles	Discussions of who holds responsibility for CVD-related tasks/behaviors	Safety net primary care	1, 2	1, 2	1, 2	X-HIV providers as trusted sources of medical advice
							X-Decisions to manage CVD for PWH
							X-HIV provider messaging on CVD risk

¹Participant groups: 1 = healthcare providers, 2 = people with HIV (PWH)

²Subthemes are presented for explanatory themes representing a combination of facilitators and barriers

³Subtheme identified in PWH dataset only

⁴Subtheme identified in healthcare provider dataset only

^§Theme present in PWH interviews only