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Health insurance is one of the main financing mechanisms currently being used in low and middle-income countries to improve access to quality services. Tanzania has been running its National Health Insurance Fund (NHIF) since 2001 and has recently undergone significant reforms. However, there is limited attention to the causal mechanisms through which NHIF improves service coverage and quality of care. This paper aims to use a system dynamics (qualitative) approach to understand NHIF causal pathways and feedback loops for improving service coverage and quality of care at the primary healthcare level in Tanzania. We used qualitative interviews with 32 stakeholders from national, regional, district, and health facility levels conducted between May to July 2021. Based on the main findings and themes generated from the interviews, causal mechanisms, and feedback loops were created. The majority of feedback loops in the CLDs were reinforcing cycles for improving service coverage among beneficiaries and the quality of care by providers, with different external factors affecting these two actions. Our main feedback loop shows that the NHIF plays a crucial role in providing additional financial resources to facilities to purchase essential medical commodities to deliver care. However, this cycle is often interrupted by reimbursement delays. Additionally, beneficiaries' perception that lower-level facilities have poorer quality of care has reinforced care seeking at higher-levels. This has decreased lower level facilities' ability to benefit from the insurance and improve their capacity to deliver quality care. Another key finding was that the NHIF funding has resulted in better services for insured populations compared to the uninsured. To increase quality of care, the NHIF may benefit from improving its reimbursement administrative processes, increasing the capacity of lower levels of care to benefit from the insurance and appropriately incentivizing providers for continuity of care. • The NHIF influences service coverage and quality in complex ways. • NHIF reimbursement is crucial for facilities and its delay affects inputs for quality. • Lower levels of care benefit less from NHIF. • Need to improve reimbursement process to enhance quality of care. [ABSTRACT FROM AUTHOR]

A rising emphasis on patient involvement in clinical research and healthcare improvement has led to the steady incorporation of patients and caregivers into this work. However, interactional factors shaping recruitment processes are not well understood. In this paper, we present a qualitative analysis of interviews with twenty-six patients, family members, engagement staff and healthcare providers who are engaged in healthcare improvement work in the United States. We focus on how stakeholders account for recruitment decisions to participate in healthcare improvement work. We find that expressions of and judgments about patients' and caregivers' cultural health capital shape providers' decisions to extend invitations to participate in healthcare improvement work. These findings extend current conceptualizations of cultural health capital beyond the clinical encounter to reveal factors shaping patient recruitment into healthcare improvement work. In theorizing how cultural health capital shapes action in this new setting, we found that healthcare providers, engagement staff, and patients/caregivers attended to different aspects of cultural health capital when accounting for why they extended or received a recruitment pitch. We further found that participating in healthcare improvement work led to a boost in cultural health capital for patients and caregivers, which they could use to develop transmissible forms of cultural health capital for less centrally involved patients and caregivers. Finally, we describe how participants in healthcare improvement collaboratives account for a lack of diversity among partners. These findings help us hypothesize the consequences of recruitment processes that rely on displays and judgments of cultural health capital and identify possibilities for change. Using the case of healthcare improvement work in Collaborative Learning Health Systems, our findings advance past work on cultural health capital in medical sociology by theorizing the role of cultural health capital in recruitment processes. • Providers recruit patients for healthcare improvement work with subjective criteria. • Providers often recruit high-resourced, privileged patients that they "vibe" with. • Partners build cultural health capital from doing healthcare improvement work. • Recruiting for cultural health capital may exclude patients from diverse backgrounds. • The role of recruitment should be considered to improve partner representation. [ABSTRACT FROM AUTHOR]