extract: 2024-02-23-jama-network-open-snap-antihypertensive-adherence-food-insecure
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@ -20,6 +20,12 @@ A systematic review published in *Hypertension* (AHA journal) analyzed 10,608 re
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### Additional Evidence (extend)
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*Source: [[2024-02-23-jama-network-open-snap-antihypertensive-adherence-food-insecure]] | Added: 2026-04-01*
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Food insecurity's mechanism for hypertension non-control operates through medication nonadherence: food-insecure patients face a budget trade-off between food and medication purchases. SNAP receipt eliminates this trade-off and reduces nonadherence by 13.6 percentage points, but only in food-insecure populations (zero effect in food-secure), confirming a specific financial constraint mechanism rather than general health effects.
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Relevant Notes:
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- hypertension-related-cvd-mortality-doubled-2000-2023-despite-available-treatment-indicating-behavioral-sdoh-failure.md
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- only-23-percent-of-treated-us-hypertensives-achieve-blood-pressure-control-demonstrating-pharmacological-availability-is-not-the-binding-constraint.md
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@ -38,6 +38,12 @@ Digital health is frequently proposed as a solution to the hypertension control
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The systematic review establishes that the binding constraints are SDOH-mediated: housing instability affects treatment adherence, transportation barriers prevent care access, food insecurity directly increases hypertension prevalence, and insurance gaps reduce BP control. The review endorses CMS's HRSN screening tool (housing, food, transportation, utilities, safety) as a necessary hypertension care component.
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### Additional Evidence (extend)
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*Source: [[2024-02-23-jama-network-open-snap-antihypertensive-adherence-food-insecure]] | Added: 2026-04-01*
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Among food-insecure hypertensive patients, SNAP receipt reduces medication nonadherence by 13.6 percentage points, identifying competing food-medication expenditure as a specific mechanism for the adherence failure that drives poor BP control. This suggests that financial constraints, not clinical factors, are a major contributor to the 77% non-control rate.
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@ -0,0 +1,28 @@
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---
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type: claim
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domain: health
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description: Food assistance relieves competing expenditure pressure between food and medications, improving adherence through budget relief rather than dietary change
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confidence: likely
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source: JAMA Network Open 2024, MEPS-NHIS linked dataset 2016-2017, n=6,692
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created: 2026-04-01
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attribution:
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extractor:
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- handle: "vida"
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sourcer:
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- handle: "jama-network-open"
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context: "JAMA Network Open 2024, MEPS-NHIS linked dataset 2016-2017, n=6,692"
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---
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# SNAP receipt reduces antihypertensive medication nonadherence by 13.6 percentage points in food-insecure hypertensive patients but has no effect in food-secure patients, establishing the food-medication trade-off as a specific SDOH mechanism for hypertension non-control
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A retrospective cohort study using linked Medical Expenditure Panel Survey and National Health Interview Survey data (2016-2017, n=6,692 hypertensive participants) found that SNAP receipt was associated with an 8.17 percentage point reduction in medication nonadherence among food-insecure patients, translating to a 13.6 percentage point effect size. Critically, this effect was entirely specific to food-insecure patients—SNAP showed zero association with adherence in food-secure populations. This specificity validates a precise mechanism: food insecurity creates a budget constraint that forces trade-offs between purchasing food and purchasing medications. SNAP relieves this constraint by providing food purchasing power, freeing household income for medication costs. This is distinct from dietary mechanisms (as in Food is Medicine programs)—the pathway operates through financial relief, not nutritional change. The dose-response pattern (effect present only when food insecurity is present) provides strong evidence that SNAP addresses a specific mechanism rather than producing a general health benefit. While this study measures adherence rather than blood pressure directly, medication adherence is the primary determinant of BP control in treated hypertensive patients, and nonadherence is the leading cause of treatment-resistant hypertension.
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---
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Relevant Notes:
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- [[five-adverse-sdoh-independently-predict-hypertension-risk-food-insecurity-unemployment-poverty-low-education-inadequate-insurance]]
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- [[only-23-percent-of-treated-us-hypertensives-achieve-blood-pressure-control-demonstrating-pharmacological-availability-is-not-the-binding-constraint]]
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- [[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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Topics:
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- [[_map]]
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@ -7,9 +7,14 @@ date: 2024-02-23
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domain: health
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secondary_domains: []
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format: journal article
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status: unprocessed
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status: processed
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priority: high
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tags: [SNAP, hypertension, medication-adherence, food-insecurity, SDOH, antihypertensive]
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processed_by: vida
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processed_date: 2026-04-01
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claims_extracted: ["snap-reduces-antihypertensive-nonadherence-13-6-pp-food-insecure-via-food-medication-tradeoff-relief.md"]
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enrichments_applied: ["five-adverse-sdoh-independently-predict-hypertension-risk-food-insecurity-unemployment-poverty-low-education-inadequate-insurance.md", "only-23-percent-of-treated-us-hypertensives-achieve-blood-pressure-control-demonstrating-pharmacological-availability-is-not-the-binding-constraint.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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@ -53,3 +58,11 @@ PRIMARY CONNECTION: [[SDOH interventions show strong ROI but adoption stalls bec
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WHY ARCHIVED: Provides specific mechanism evidence for SNAP improving hypertension outcomes — via medication adherence pathway, not dietary change. Adds a second mechanistic pathway to the food-environment → hypertension thread.
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EXTRACTION HINT: Extract the mechanism finding precisely — "food insecurity creates food-medication trade-off; SNAP relieves the trade-off; this is the pathway to medication adherence improvement." Be careful to note this is adherence, not direct BP outcome. The clinical implication for BP is strong but indirect.
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## Key Facts
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- Study sample: 6,692 participants with hypertension from linked MEPS-NHIS dataset, 2016-2017
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- Primary finding: 8.17 percentage point difference in nonadherence between SNAP recipients vs. non-recipients in food-insecure group
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- Effect size: 13.6 percentage point reduction in nonadherence among food-insecure SNAP recipients
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- Specificity: Zero effect of SNAP on medication adherence in food-secure population
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- Published: JAMA Network Open, February 23, 2024
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