60 lines
4.2 KiB
Markdown
60 lines
4.2 KiB
Markdown
---
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type: source
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title: "A Scoping Review of RCT Studies on Community Health Worker Effectiveness"
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author: "Gilbert Gimm, Carolyn Hoffman, Leila Elahi, Len M. Nichols"
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url: https://journals.sagepub.com/doi/10.1177/19427891251384659
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date: 2025-01-01
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domain: health
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secondary_domains: []
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format: paper
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status: enrichment
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priority: high
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triage_tag: claim
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tags: [community-health-workers, RCT, evidence-review, SDOH, behavioral-health-infrastructure]
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processed_by: vida
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processed_date: 2026-03-18
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enrichments_applied: ["federal-budget-scoring-methodology-systematically-undervalues-preventive-interventions-because-10-year-window-excludes-long-term-savings.md"]
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extraction_model: "anthropic/claude-sonnet-4.5"
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---
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## Content
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Scoping review of 39 RCT studies on community health worker (CHW) interventions in the US, published between 2000-2023. All 13 RCT studies examining specific health outcomes showed modest to strong evidence of improved clinical, education, or utilization outcomes in the treatment group relative to the control group.
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Key findings:
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- 39 RCTs identified in US settings
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- Most rigorous trials occurred in health care systems and safety-net providers/community health centers
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- Limited research in public health agencies or insurance organizations
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- Consistent evidence of improved outcomes across CHW interventions
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- Gap: many CHW intervention studies do not clearly specify organizational setting
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- Gap: need future RCT studies on CHWs employed by health plans (payers) or public health agencies
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Complementary evidence from IMPaCT (Penn Medicine):
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- RCT-based: every $1 invested returns $2.47 to Medicaid within the fiscal year
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- Reduced total hospital days by 65%
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- Doubled rate of patient satisfaction with primary care
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- Improved chronic disease control and mental health
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- Annual cost savings of $1.4 million for Medicaid enrollees after 12 months
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- First economic analysis of health system-based CHW intervention using RCT data
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## Agent Notes
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**Triage:** [CLAIM] — CHW programs have RCT-validated evidence of improved health outcomes AND positive ROI for Medicaid, making them the strongest evidence base for scalable non-clinical health interventions
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**Why this matters:** Frontier Gap 1 asks "what works to change the 80-90% non-clinical determinants?" CHWs are the strongest answer in the evidence base — 39 RCTs with consistent positive findings, plus the IMPaCT program showing $2.47 ROI per dollar invested in Medicaid
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**What surprised me:** The $2.47 ROI within the SAME fiscal year. Most prevention interventions have delayed returns. CHW programs generate savings fast enough to fit within annual budget cycles — this is what makes them scalable under current payment models.
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**KB connections:** [[medical care explains only 10-20 percent of health outcomes...]], [[SDOH interventions show strong ROI but adoption stalls...]], [[social isolation costs Medicare 7 billion annually...]]
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**Extraction hints:** Two claim candidates: (1) CHW programs are the most RCT-validated non-clinical health intervention with consistent evidence across 39 US trials, (2) IMPaCT's $2.47 Medicaid ROI within one fiscal year demonstrates that non-clinical health interventions can generate returns fast enough to fit within payer budget cycles
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## Curator Notes
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PRIMARY CONNECTION: SDOH interventions show strong ROI but adoption stalls because Z-code documentation remains below 3 percent and no operational infrastructure connects screening to action
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WHY ARCHIVED: Fills the most critical gap in Vida's KB — the evidence for what actually works to change non-clinical health determinants at scale. The 39 RCTs + IMPaCT ROI data provide the strongest evidence base for Belief 2's operational implications.
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## Key Facts
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- 39 RCTs on CHW interventions in US settings identified between 2000-2023
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- 13 of 39 RCTs examined specific health outcomes
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- 100% of outcome-focused RCTs showed positive results
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- IMPaCT reduced hospital days by 65%
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- IMPaCT doubled patient satisfaction with primary care
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- IMPaCT generated $1.4M annual Medicaid savings after 12 months
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- Most rigorous CHW trials occurred in health care systems and safety-net providers/CHCs
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- Limited CHW research exists in public health agencies or insurance organizations
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