- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT06648226
Elintarvikkeiden vaihdot päivittäistavaraostosten terveellisyyden ja ympäristön kestävyyden parantamiseksi
Satunnaistettu elintarvikkeiden vaihtokoe päivittäistavaraostosten terveellisyyden ja ympäristön kestävyyden parantamiseksi
Tutkimuksen yleiskatsaus
Tila
Yksityiskohtainen kuvaus
Osallistujat suorittavat verkossa satunnaistetun koehenkilöiden välisen kokeen. Kokeilu sisältää kolme opintokäyntiä.
Ensimmäisellä opintokäynnillä osallistujat suorittavat verkkokaupan ostotehtävän ilman väliintuloa. Osallistujille annetaan 50 dollarin budjetti, ja heitä pyydetään tekemään ostoksia normaalisti. Myymälä tallentaa osallistujien valinnat. Ostostehtävän suorittamisen jälkeen osallistujat täyttävät verkkokyselyn.
Noin viikkoa myöhemmin osallistujat suorittavat toisen opintokäynnin samoilla ohjeilla. Ne satunnaistetaan yhteen neljästä ehdosta (1) vain terveys, 2) vain ympäristö, 3) yhdistetty terveys ja ympäristö, 4) valvonta. Vain terveys -tilassa osallistujat näkevät terveysluokkien tarroja, ja heidät voidaan ohjata vaihtamaan valintansa terveellisempään tavaraan. Vain ympäristö -tilassa osallistujat näkevät tarroja, joissa on ilmastovaikutusluokitukset, ja heidät voidaan ohjata vaihtamaan valikoimansa kestävämpiin tuotteisiin. Terveys- ja ympäristötilanteessa osallistujat näkevät terveys- ja ilmastovaikutusten arvosanat, ja heidät voidaan ohjata vaihtamaan valintansa terveellisempään tai kestävämpään tavaraan. Vertailuryhmässä osallistujat eivät näe mitään tunnisteita tai vaihtoja. Myymälä tallentaa osallistujien valinnat. Ostostehtävän suorittamisen jälkeen osallistujat täyttävät verkkokyselyn.
Kolmannella opintokäynnillä osallistujat jatkavat heille osoitettua ryhmää ja heitä pyydetään toistamaan samat tehtävät kuin toisella vierailulla.
Opintotyyppi
Ilmoittautuminen (Todellinen)
Vaihe
- Ei sovellettavissa
Yhteystiedot ja paikat
Opiskelupaikat
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California
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Palo Alto, California, Yhdysvallat, 94304
- Stanford School of Medicine
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
- Aikuinen
- Vanhempi Aikuinen
Hyväksyy terveitä vapaaehtoisia
Kuvaus
Sisällön kriteerit:
- 18 vuotta täyttänyt tai vanhempi
- Asua Yhdysvalloissa
- Osaa lukea ja puhua englantia
- Sinulla on Internet-yhteys, jotta voit suorittaa 3 online-opintokäyntiä
Poissulkemiskriteerit:
- Alle 18-vuotias
- Asua Yhdysvaltojen ulkopuolella
- Englanninkielistä kyselyä ei voi täyttää
- Sinulla ei ole Internet-yhteyttä kolmen online-opintokäynnin suorittamiseen
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Ennaltaehkäisy
- Jako: Satunnaistettu
- Inventiomalli: Rinnakkaistehtävä
- Naamiointi: Ei mitään (avoin tarra)
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
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Active Comparator: Ohjaus
Ei tarroja tai vaihtoja.
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Osallistujat eivät näe ylimääräisiä tarroja tai heille tarjotaan vaihtoja verkkokaupassa.
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Kokeellinen: Terveysvaihto
Tunnisteet ovat "ravitsemusluokkia" tuotteille, ja korvaavien vaihtoehdotukset on tarkoitettu paremmalla ravitsemusluokalla.
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Osallistujat näkevät "health grade" -merkinnät kaikissa verkkokaupan tuotteissa, jotka osoittavat niiden terveellisyyden Yhdistyneen kuningaskunnan Ofcom Nutrient Profiling Model -pisteiden perusteella.
Terveyspisteet merkinnät jäljittelevät Nutri-Score -merkintöjä, joissakin Euroopan maissa käytettyä merkintäjärjestelmää, joissa on värikoodattu arvosana "A" (vihreä) - "F" (punainen) jokaisessa tuotteessa.
A- ja B-merkinnöillä varustetut tuotteet täyttävät Yhdistyneen kuningaskunnan asettamat rajat tuotteille, joita voidaan markkinoida lapsille, ja C-, D- ja F-merkinnöillä varustetut tuotteet ovat vähemmän terveellisiä kuin tämä raja (Ofcomin tertileihin perustuen) pisteet kussakin ruokaryhmässä).
Kun osallistujat yrittävät lisätä ostoskoriinsa vähemmän terveellisen tuotteen (esim. "C", "D" tai "F" terveysmerkintä), kauppa ehdottaa automaattisesti terveellisempää tuotetta samasta kategoriasta (esim. tai "B" terveysmerkintä).
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Kokeellinen: Ilmastonvaihto
Tunnisteet ovat "ilmastoluokkia" tuotteille, ja korvaavien vaihtoehdotukset ovat kohteille, joilla on parempi ilmastoluokka.
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Osallistujat näkevät "ilmastoluokan" etiketit kaikille tuotteille, jotka osoittavat niiden ilmastovaikutukset.
Ilmastovaikutus lasketaan kasvihuonekaasupäästöinä, jotka liittyvät tuotteen tuottamiseen hiilidioksidekvivalentissa (CO2-EQ) 100 g / ts. "Hiilijalanjälki").
Tunnisteet levitetään jokaisessa elintarvikeryhmässä hiilijalanjäljen kvintiilien perusteella.
Kun osallistujat yrittävät lisätä korkean ilmastovaikutteisen tuotteen ostoskoriinsa (esim. "C," D "tai" F "ilmastomerkinnällä), myymälä tarjoaa heille automaattisesti vaihtosopimuksia ilmastoystävällisempiin tuotteisiin (esim." A "tai" B "ilmasto-etiketti).
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Kokeellinen: Yhdistetyt terveys- ja ilmastovaihtosopimukset
Tunnisteet ovat "ravitsemusluokat" ja "ilmastoluokat" tuotteille, ja korvaavien vaihtoehdotukset koskevat esineitä, jotka ovat parempia kuin alun perin valitut tuotteet ainakin yhdellä ulottuvuudella (ravitsemusluokka tai ilmastoluokka) ja eivät huonompi kuin alun perin valitut tuotteet kummassakin ulottuvuudessa.
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Osallistujat tarkastelevat sekä terveys- ja ilmastoluokan merkkejä kaikista online -ruokakaupan tuotteista.
Kun osallistujat yrittävät valita tuotteen, jolla on "C", "D" tai "F" -tarra joko heidän ostoskoriinsa ulottuvuuteen, myymälä tarjoaa automaattisesti vaihtoa tuotteille, jotka tarjoavat parannusta alkuperäiseen ruokaan nähden ainakin yhdellä ulottuvuudella (terveys tai ilmastoystävällisyys) ja olivat ainakin yhtä hyviä tai parempia toisella ulottuvuudella, ja ylimääräisellä suojelijalla ei koskaan ehdottaa tuotteita "C: n" tai "F-levy-levyllä". "
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Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
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Healthfulness of Product Selection
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Carbon Footprint of Participants' Grocery Store Selections
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, the non-missing value was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
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Calorie Density of Participants' Grocery Selections
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Sugar Density of Participants' Grocery Selections
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Sodium Density of Participants' Grocery Selections
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Saturated Fat Density of Participants' Grocery Selections
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Fiber Density of Participants' Grocery Selections
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Protein Density of Participants' Grocery Selections
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Total Spending on Participants' Grocery Selections
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Thinking About Health
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Thinking About Climate Impact
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Thinking About Taste
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Negative Emotional Reactions While Shopping
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Positive Emotional Reactions While Shopping
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Injunctive Norms to Buy Healthy Foods
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Descriptive Norms to Buy Healthy Foods
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Injunctive Norms to Buy Foods With Low Climate Impact
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Descriptive Norms to Buy Foods With Low Climate Impact
Aikaikkuna: 1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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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.
If participants had missing data at one of these visits, data from the non-missing visit was used.
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1-week follow-up (visit 2), and 2-week follow-up (visit 3)
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Muut tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
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Perceived Helpfulness of Nutrition Labels
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Perceived Helpfulness of Climate Labels
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Perceived Helpfulness of Health Swap Recommendations
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Perceived Helpfulness of Climate Swap Recommendations
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Liking of Nutrition Labels
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Liking of Climate Labels
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Liking of Health Swap Recommendations
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Liking of Climate Swap Recommendations
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Acceptability of Nutrition Labels
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Acceptability of Climate Labels
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Acceptability of Health Swap Recommendations
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Acceptability of Climate Swap Recommendations
Aikaikkuna: Assessed at 2-week follow-up (visit 3)
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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).
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Assessed at 2-week follow-up (visit 3)
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Yhteistyökumppanit ja tutkijat
Sponsori
Yhteistyökumppanit
Tutkijat
- Päätutkija: Anna H. Grummon, PhD, Stanford School of Medicine
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Todellinen)
Ensisijainen valmistuminen (Todellinen)
Opintojen valmistuminen (Todellinen)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muita asiaankuuluvia MeSH-ehtoja
Muut tutkimustunnusnumerot
- 76925
- K01HL158608 (Yhdysvaltain NIH-apuraha/sopimus)
Yksittäisten osallistujien tietojen suunnitelma (IPD)
Aiotko jakaa yksittäisten osallistujien tietoja (IPD)?
IPD-suunnitelman kuvaus
IPD-jaon aikakehys
IPD-jaon käyttöoikeuskriteerit
IPD-jakamista tukeva tietotyyppi
- ANALYTIC_CODE
Lääke- ja laitetiedot, tutkimusasiakirjat
Tutkii yhdysvaltalaista FDA sääntelemää lääkevalmistetta
Tutkii yhdysvaltalaista FDA sääntelemää laitetuotetta
Yhdysvalloissa valmistettu ja sieltä viety tuote
Nämä tiedot haettiin suoraan verkkosivustolta clinicaltrials.gov ilman muutoksia. Jos sinulla on pyyntöjä muuttaa, poistaa tai päivittää tutkimustietojasi, ota yhteyttä register@clinicaltrials.gov. Heti kun muutos on otettu käyttöön osoitteessa clinicaltrials.gov, se päivitetään automaattisesti myös verkkosivustollemme .