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Food Swaps for at forbedre sundheden og den miljømæssige bæredygtighed af dagligvarekøb

4. maj 2026 opdateret af: Anna Grummon, Stanford University

Et randomiseret forsøg med fødevarebytte for at forbedre sundheden og den miljømæssige bæredygtighed af dagligvarekøb

Undersøgelsen har til formål at afgøre, om modtagelse af anbefalinger om sundere eller mere miljømæssigt bæredygtige swaps (eller begge dele) i et online købmandsbutiksmiljø forbedrer sundheden og den miljømæssige bæredygtighed af forbrugernes mad- og drikkevarekøb sammenlignet med shopping som normalt uden bytteanbefalinger. Netbutikken vil registrere deltagernes valg. Deltagerne vil også blive bedt om at gennemføre undersøgelsesforanstaltninger.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Deltagerne vil gennemføre et online randomiseret eksperiment mellem emner. Forsøget vil omfatte tre studiebesøg.

I det første studiebesøg vil deltagerne gennemføre en online indkøbsopgave uden indblanding. Deltagerne får et budget på $50 og bliver bedt om at handle, som de plejer. Butikken vil registrere deltagernes valg. Efter at have gennemført indkøbsopgaven vil deltagerne udfylde en online-undersøgelse.

Cirka en uge senere vil deltagerne gennemføre et andet studiebesøg med de samme instruktioner. De vil blive randomiseret til 1 af 4 tilstande (1) kun sundhed, 2) kun miljø, 3) kombineret sundhed og miljø, 4) kontrol. I tilstanden udelukkende til sundhed vil deltagerne se etiketter med sundhedskarakterer og kan blive bedt om at bytte deres valg til sundere varer. I den miljømæssige tilstand vil deltagerne se etiketter med klimapåvirkningsgrader og kan blive bedt om at bytte deres valg til mere bæredygtige varer. I sundheds- og miljøtilstanden vil deltagerne se etiketter med sundheds- og klimapåvirkningsgrader og kan blive bedt om at bytte deres valg til sundere eller mere bæredygtige varer. I kontrolgruppen vil deltagerne ikke se nogen etiketter eller bytte. Butikken vil registrere deltagernes valg. Efter at have gennemført indkøbsopgaven vil deltagerne udfylde en online-undersøgelse.

I det tredje studiebesøg vil deltagerne fastholde deres tildelte gruppe og vil blive bedt om at gentage de samme opgaver som ved det andet besøg.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

1201

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • California
      • Palo Alto, California, Forenede Stater, 94304
        • Stanford School of Medicine

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inklusionskriterier:

  • 18 år eller ældre
  • Bo i USA
  • Kan læse og tale engelsk
  • Har internetadgang for at gennemføre de 3 online studiebesøg

Ekskluderingskriterier:

  • Under 18 år
  • Bor uden for USA
  • Kunne ikke gennemføre en undersøgelse på engelsk
  • Har ikke internetadgang for at gennemføre de 3 online studiebesøg

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Kontrollere
Ingen etiketter eller bytte.
Adfærdsmæssigt: Kontrollere
Deltagerne vil ikke se nogen ekstra etiketter eller blive tilbudt ombytninger i online-købmanden.
Eksperimentel: Sundhedswaps
Etiketter vil være "ernæringskvaliteter" til produkter og udskiftning af swap -forslag vil være til varer med en bedre ernæringskvalitet.
Adfærdsmæssigt: Sundhedsbytte
Deltagerne vil se "sundhedsgrad"-etiketter på alle produkter i online-købmandsbutikken, der angiver deres sundhed som estimeret af United Kingdom Ofcom Nutrient Profiling Model-resultater. Sundhedsscore-etiketterne vil efterligne Nutri-Score-etiketter, et mærkningssystem, der bruges i nogle europæiske lande, som viser en farvekodet karakter fra "A" (grøn) til "F" (rød) på hvert produkt. Produkter med "A"- og "B"-mærker vil opfylde Storbritanniens grænseværdi for produkter, der kan markedsføres til børn, og produkter med "C", "D" og "F"-mærker er mindre sunde end denne grænseværdi (baseret på tertiler af Ofcom) score inden for hver fødevaregruppe). Når deltagere forsøger at tilføje et mindre sundt produkt til deres indkøbskurv (f.eks. "C", "D" eller "F" sundhedsmærke), vil butikken automatisk foreslå et sundere produkt fra samme kategori (f.eks. med et "A" eller "B" sundhedsmærke).
Eksperimentel: Klimaswaps
Etiketter vil være "klimakvaliteter" for produkter og udskiftning af swap -forslag vil være til genstande med en bedre klimakvalitet.
Adfærdsmæssigt: Klimaswaps
Deltagerne vil se "Klima -klasse" -etiketter på alle produkter, der angiver deres klimapåvirkning. Klimapåvirkningen beregnes som drivhusgasemissionerne forbundet med fremstilling af produktet i kuldioxidækvivalenter (CO2-EQ) pr. 100 g (dvs. "carbon footprint"). Etiketter vil blive påført baseret på kvintiler af kulstofaftryk i hver fødevaregruppe. Når deltagerne forsøger at tilføje et produkt med høj påvirkning af påvirkningen til deres indkøbsvogn (f.eks. Med en "C", "D" eller "F" klimamærke), tilbyder butikken automatisk byt til flere klimvenlige produkter (f.eks. Med A "A" eller "B" klimamærge).
Eksperimentel: Kombineret sundheds- og klimaswaps
Etiketter vil være "ernæringskarakterer" og "klimakvaliteter" for produkter og udskiftning af swap -forslag vil være til genstande, der er bedre end oprindeligt valgte produkter på mindst en dimension (ernæringskvalitet eller klimakvalitet) og ikke værre end oprindeligt valgte produkter på begge dimension.
Adfærdsmæssigt: Kombineret sundheds- og klimaswaps
Deltagerne vil se både sundheds- og klimaklasse -mærkerne på alle produkter i online købmanden. Når deltagerne forsøger at vælge et produkt med et "C", "D" eller "F" etiket på enten dimension til deres indkøbsvogn, vil butikken automatisk tilbyde dem swaps til produkter, der tilbyder forbedring i forhold til den originale mad på mindst 1 dimension (sundhed eller klima-venlighed) og var mindst lige så god eller bedre på den anden dimension, med den ekstra beskyttelsesræk, som butikken aldrig foreslår produkter med en "C", "D" eller "F" på enten af ​​enten dimension.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Healthfulness of Product Selection
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will asses healthfulness of participants' selections as the average Ofcom Nutrient Profiling Model score of the products the participants select in the shopping task. The score ranges from 0 to 100, where higher scores are healthier. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Carbon Footprint of Participants' Grocery Store Selections
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess the carbon footprint of participants' selections, operationalized as the average carbon footprint (in CO2-equivalents) of the products the participants select in the shopping task. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Calorie Density of Participants' Grocery Selections
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess the average calorie density of participants' grocery selections, calculated as the average kcal per 100g of the selected products. Higher values will indicate higher calorie density. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Sugar Density of Participants' Grocery Selections
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess the average sugar density of participants' grocery selections, calculated as the average grams of sugar per 100g of the selected products. Higher values will indicate higher sugar density. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Sodium Density of Participants' Grocery Selections
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess the average sodium density of participants' grocery selections, calculated as the average milligrams of sodium per 100g of the selected products. Higher values will indicate higher sodium density. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Saturated Fat Density of Participants' Grocery Selections
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess the average saturated fat density of participants' grocery selections, calculated as the average grams of saturated fat per 100g of the selected products. Higher values will indicate higher saturated fat density. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Fiber Density of Participants' Grocery Selections
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess the average fiber density of participants' grocery selections, calculated as the average grams of fiber per 100g of the selected products. Higher values will indicate higher fiber density. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Protein Density of Participants' Grocery Selections
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess the average protein density of participants' grocery selections, calculated as the average grams of protein per 100g of the selected products. Higher values will indicate higher protein density. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Total Spending on Participants' Grocery Selections
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess the total amount participants spent on their grocery selections in United States dollars. Higher values will indicate greater spending. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Thinking About Health
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess thinking about health using 1 item: "We are interested in how you selected products while you were grocery shopping. When you selected foods, how much did you think about each of the following characteristics? ... health." Response options range from "Not at all" (1) to "A great deal" (5). Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Thinking About Climate Impact
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess thinking about climate impact using 1 item: "We are interested in how you selected products while you were grocery shopping. When you selected foods, how much did you think about each of the following characteristics? ... climate impact." Response options range from "Not at all" (1) to "A great deal" (5). Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Thinking About Taste
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess thinking about taste using 1 item: "We are interested in how you selected products while you were grocery shopping. When you selected foods, how much did you think about each of the following characteristics? ... taste." Response options range from "Not at all" (1) to "A great deal" (5). Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Negative Emotional Reactions While Shopping
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess negative emotional reactions using 3 items: "While you were shopping, how much did you feel…" "worried", "guilty," "ashamed"? Response options range from "Not at all" (1) to "Extremely" (5). The investigators will average the 3 items; higher average scores indicate stronger negative emotional reactions. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Positive Emotional Reactions While Shopping
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess positive emotional reactions using 3 items: "While you were shopping, how much did you feel…" "inspired", "proud," "reassured"? Response options range from "Not at all" (1) to "Extremely" (5). The investigators will average the 3 items; higher average scores indicate stronger positive emotional reactions. Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Injunctive Norms to Buy Healthy Foods
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess injunctive norms to buy healthy foods with 1 item: "People who are important to me think I should buy healthy foods." Response options range from "Strongly disagree" (1) to "Strongly agree" (5). Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Descriptive Norms to Buy Healthy Foods
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess descriptive norms to buy healthy foods with 1 item: "Most shoppers buy healthy foods when they are shopping for groceries." Response options range from "Strongly disagree" (1) to "Strongly agree" (5). Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Injunctive Norms to Buy Foods With Low Climate Impact
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess injunctive norms to buy foods with low climate impact with 1 item: "People who are important to me think I should buy foods with low climate impact." Response options range from "Strongly disagree" (1) to "Strongly agree" (5). Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)
Descriptive Norms to Buy Foods With Low Climate Impact
Tidsramme: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
The study will assess descriptive norms to buy foods with lower climate impact with 1 item: "Most shoppers buy foods with low climate impact when they are shopping for groceries." Response options range from "Strongly disagree" (1) to "Strongly agree" (5). Outcome values were calculated as each participant's mean across visits 2 and 3.
1-week follow-up (visit 2), and 2-week follow-up (visit 3)

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Perceived Helpfulness of Nutrition Labels
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess perceived helpfulness of nutrition labels with 1 item: "These labels would help me choose healthier foods." Response options range from "Not at all" (1) to "A great deal" (5).
Assessed at 2-week follow-up (visit 3)
Perceived Helpfulness of Climate Labels
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess perceived helpfulness of climate labels with 1 item: "These labels would help me choose foods with lower climate impact." Response options range from "Not at all" (1) to "A great deal" (5).
Assessed at 2-week follow-up (visit 3)
Perceived Helpfulness of Health Swap Recommendations
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess perceived helpfulness of health swap recommendations with 1 item: "This type of recommendation would help me choose healthier foods." Response options range from "Not at all" (1) to "A great deal" (5).
Assessed at 2-week follow-up (visit 3)
Perceived Helpfulness of Climate Swap Recommendations
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess perceived helpfulness of climate swap recommendations with 1 item: "This type of recommendation would help me choose more foods with lower climate impact." Response options range from "Not at all" (1) to "A great deal" (5).
Assessed at 2-week follow-up (visit 3)
Liking of Nutrition Labels
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess liking of nutrition labels with 1 item: "I like these labels." Response options range from "Not at all" (1) to "A great deal" (5).
Assessed at 2-week follow-up (visit 3)
Liking of Climate Labels
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess liking of climate labels with 1 item: "I like these labels." Response options range from "Not at all" (1) to "A great deal" (5).
Assessed at 2-week follow-up (visit 3)
Liking of Health Swap Recommendations
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess liking health swap recommendations with 1 item: "I like these recommendations." Response options range from "Not at all" (1) to "A great deal" (5).
Assessed at 2-week follow-up (visit 3)
Liking of Climate Swap Recommendations
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess liking climate swap recommendations with 1 item: "I like these recommendations." Response options range from "Not at all" (1) to "A great deal" (5).
Assessed at 2-week follow-up (visit 3)
Acceptability of Nutrition Labels
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess acceptability of the nutrition labels with 1 item: "How much would you approve or disapprove of these labels being displayed on foods sold in grocery stores?" Response options range from "Strongly disapprove" (1) to "Strongly approve" (5).
Assessed at 2-week follow-up (visit 3)
Acceptability of Climate Labels
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess acceptability of the climate labels with 1 item: "How much would you approve or disapprove of these labels being displayed on foods sold in grocery stores?" Response options range from "Strongly disapprove" (1) to "Strongly approve" (5).
Assessed at 2-week follow-up (visit 3)
Acceptability of Health Swap Recommendations
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess acceptability of the health swap recommendations with 1 item: "How much would you approve or disapprove of these recommendations being offered by grocery stores?" Response options range from "Strongly disapprove" (1) to "Strongly approve" (5).
Assessed at 2-week follow-up (visit 3)
Acceptability of Climate Swap Recommendations
Tidsramme: Assessed at 2-week follow-up (visit 3)
The study will assess acceptability of the climate swap recommendations 1 item: "How much would you approve or disapprove of these recommendations being offered by grocery stores?" Response options range from "Strongly disapprove" (1) to "Strongly approve" (5).
Assessed at 2-week follow-up (visit 3)

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Stanford University

Samarbejdspartnere

National Heart, Lung, and Blood Institute (NHLBI)

Efterforskere

  • Ledende efterforsker: Anna H. Grummon, PhD, Stanford School of Medicine

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

7. maj 2025

Primær færdiggørelse (Faktiske)

25. juni 2025

Studieafslutning (Faktiske)

25. juni 2025

Datoer for studieregistrering

Først indsendt

16. oktober 2024

Først indsendt, der opfyldte QC-kriterier

16. oktober 2024

Først opslået (Faktiske)

18. oktober 2024

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

1. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

4. maj 2026

Sidst verificeret

1. maj 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 76925
  • K01HL158608 (U.S. NIH-bevilling/kontrakt)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

Vi sender dataene til et offentligt depot.

IPD-delingstidsramme

Den analytiske kode vil blive sendt til et offentligt lager ved offentliggørelse af undersøgelsesresultater.

IPD-delingsadgangskriterier

Offentligt tilgængelig uden begrænsninger.

IPD-deling Understøttende informationstype

  • ANALYTIC_CODE

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

produkt fremstillet i og eksporteret fra U.S.A.

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Sundhedsbytte

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Sponsorer og samarbejdspartnere

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Betingelser

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