Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/5166
Title: Perspective:USDANutritionEvidenceSystematic ReviewMethodology:GradingtheStrengthof EvidenceinNutrition-andPublicHealth–Related SystematicReviews
Authors: Spil, Maureen K
English, LauralK
Raghavan, Ramkripa
Callahan, Emily
Güngör, Darcy
Keywords: grading
NESR
nutrition evidence systematic review
strength of evidence
systematicreviews
,Dietary Guidelinesfor Americans,publichealth
Federalfoodpolicya
Issue Date: 2022
Abstract: TheUSDA’sNutritionEvidenceSystematicReview(NESR)teamconductsfood-andnutrition-relatedsystematicreviewsusedtoinformUSFederal guidelinesandprograms,includingtheDietaryGuidelinesforAmericans.NESR’ssystematicreviewmethodologyincludesasteptogradethestrength oftheevidenceunderlyingconclusionstatements,whichiscriticalforensuringthatendusersunderstandthelevelofcertaintyinconclusionswhen usingthemtomakedecisions.Overtime,NESRhasensureditsgradingprocessnotonlyremainsstateoftheartbutisalsodesignedspecificallyfor systematicreviewsthatinformFederalguidelinesandprogramsonnutritionandpublichealth.TheNESRgradingprocessusedbythe2020Dietary Guidelines Advisory Committee included 5 grading elements: risk of bias, consistency, directness, precision, and generalizability. Evidence was groupedbystudydesignandassessedagainsttheseelements,andthegradeassignedtotheentirebodyofevidencetookintoconsiderationthe strengthsandlimitationsofeachdesign.Basedonthisassessment,1of4gradeswasassigned:strong,moderate,limited,orgradenotassignable. The grade was clearly communicated by integrating specific language into each conclusion statement (e.g., “strong evidence demonstrates”or “limited evidence suggests”), and supported by rationale documented in the review. NESR’s grading process aligns with approaches used by otherorganizationsthatconductsystematicreviews,whileretainingaspectsuniquetoNESR’sroleininformingFederalnutritionandpublichealth guidelines and programs. It provides a framework that promotes consistency in grading across food- and nutrition-related reviews, while offering flexibility that allows for thorough consideration of the body of evidence underlying an individual conclusion statement. NESR’s rigorous and transparentmethodsforgradingthestrengthofevidenceinfood-andnutrition-relatedsystematicreviewsensurethatdecisionsrelatedtonutrition andpublichealtharebasedonthestrongestavailableevidence
URI: http://localhost:8080/xmlui/handle/123456789/5166
Appears in Collections:VOL 13 NO 4 2022

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