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| Name | Class |
|---|---|
| Ohio State University | OTHER |
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The purpose of this study is to test the use of a smartphone app as a way to measure food waste.
Investigators propose to improve the accuracy and convenience of household food waste measurement so that consumer food waste program evaluations yield more power, less bias, less measurement error, and greater representation of targeted populations.
Investigators will improve measurement via the development of the FoodImage smartphone app, a technology leveraging the investigators' expertise in creating and deploying apps to measure food intake and deliver nutritional interventions in free-living household conditions. Investigators will validate the app against weighed waste in a controlled laboratory setting.
The study will yield an app ready for future study deployment while analyses of the data will inform rapidly evolving policy discussions concerning optimal approaches to reduce food waste. These outcomes align with program priorities to understand the economics of food waste and to use behavioral economics to address consumption behavior.
Specific objectives include:
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Phase 1: Lab Testing (Visit 1, Day 0) | No Intervention | In a laboratory kitchen, participants will use the following 3 methods to record and measure food waste during simulated shopping trip and kitchen clean-outs: the FoodImage App, Pen-and-paper Records, and Pen-and-paper records with a scale. Measurements will be collected by participants with all three methods, while lab personnel directly weigh foods to provide the criterion value. | |
| Phase 2: RCT Stress Management | Active Comparator | Participants will use the FoodImage app to capture data on food purchases, food waste that occurs during food preparation, food waste that is present after eating, and food waste from food purges in free-living conditions. Participants will capture baseline data for 4-7 days. After a 1-week break, participants will use the app to record food waste for approximately 4-7 days over the subsequent week. They will also receive information on stress management |
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| Phase 2: RCT Food Waste Reduction | Experimental | Phase 2 will occur in participants' natural environment (free-living conditions). Participants will use the FoodImage app to capture data on food purchases, food waste that occurs during food preparation, food waste that is present after eating, and food waste from food purges. Participants will use the app to record food waste for approximately 4-7 days over the subsequent week. They will also be provided with the following:
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Natural Environment/Stress Management | Other | Participants will use the FoodImage app to capture data on food purchases, food waste that occurs during food preparation, food waste that is present after eating, and food waste from food purges in free-living conditions. Participants will capture baseline data for 4-7 days. After a 1-week break, participants will use the app to record food waste for approximately 4-7 days over the subsequent week. They will also receive information on stress management |
| Measure | Description | Time Frame |
|---|---|---|
| Phase 1: Food Waste Error | Participant estimations of food waste using the following three experimental methods as compared to the criterion value of weighed waste collected by study staff: 1) the FoodImage App (FoodImage app estimates minus the criterion value of lab personnel measured weighed food waste), 2) pen and paper diary with visual estimation of food amounts (pen and paper estimates minus the criterion value), and 3) pen and paper diary with a scale (pen and paper dairy accompanied by a scale minus directly weighed foods by lab personnel). All food values are in grams. The error values noted here represent less accurate estimates the further away they are from zero, either in the positive or negative direction. There are no min and max values to error measures. | Visit 1 |
| Measure | Description | Time Frame |
|---|---|---|
| Phase 2: Weight of All Household Waste | Difference in change in total weight of all sources of household food waste. | Baseline to Day 14 |
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Inclusion Criteria:
Exclusion Criteria:
In addition to those who do not meet inclusion criteria, subjects who meet any of the following criteria will be excluded from enrollment:
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| Name | Affiliation | Role |
|---|---|---|
| Corby K Martin, Ph.D. | Pennington Biomedical Research Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Pennington Biomedical Research Center | Baton Rouge | Louisiana | 70808 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 32773964 | Derived | Roe BE, Qi D, Beyl RA, Neubig KE, Martin CK, Apolzan JW. The Validity, Time Burden, and User Satisfaction of the FoodImage Smartphone App for Food Waste Measurement Versus Diaries: A Randomized Crossover Trial. Resour Conserv Recycl. 2020 Sep;160:104858. doi: 10.1016/j.resconrec.2020.104858. Epub 2020 May 21. |
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| ID | Title | Description |
|---|---|---|
| FG000 | Phase 2: RCT Stress Management | Participants will use the FoodImage app to capture data on food purchases, food waste that occurs during food preparation, food waste that is present after eating, and food waste from food purges in free-living conditions. Participants will capture baseline data for 4-7 days. After a 1-week break, participants will use the app to record food waste for approximately 4-7 days over the subsequent week. They will also receive information on stress management Natural Environment/Stress Management: Participants will use the FoodImage app to capture data on food purchases, food waste that occurs during food preparation, food waste that is present after eating, and food waste from food purges in free-living conditions. Participants will capture baseline data for 4-7 days. After a 1-week break, participants will use the app to record food waste for approximately 4-7 days over the subsequent week. They will also receive information on stress management |
| FG001 | Phase 2: RCT Food Waste Reduction | Phase 2 will occur in participants' natural environment (free-living conditions). Participants will use the FoodImage app to capture data on food purchases, food waste that occurs during food preparation, food waste that is present after eating, and food waste from food purges. Participants will use the app to record food waste for approximately 4-7 days over the subsequent week. They will also be provided with the following:
Natural Environment/Reduce Food Waste: Participants will use the FoodImage app to capture data on food purchases, food waste that occurs during food preparation, food waste that is present after eating, and food waste from food purges in free-living conditions. Participants will use the app to record food waste for approximately 4-7 days over the subsequent week. They will also be provided with the following:
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| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
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Includes individuals recruited to participate, screened for eligibility, and measured at baseline. Arms/Groups are combined because baseline measures were collected prior to randomization.
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| ID | Title | Description |
|---|---|---|
| BG000 | All Participants | All individuals recruited to participate in the study. Arms/Groups are combined because baseline measures were collected prior to randomization. |
| Units | Counts |
|---|---|
| Participants |
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| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Continuous | Mean |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Phase 1: Food Waste Error | Participant estimations of food waste using the following three experimental methods as compared to the criterion value of weighed waste collected by study staff: 1) the FoodImage App (FoodImage app estimates minus the criterion value of lab personnel measured weighed food waste), 2) pen and paper diary with visual estimation of food amounts (pen and paper estimates minus the criterion value), and 3) pen and paper diary with a scale (pen and paper dairy accompanied by a scale minus directly weighed foods by lab personnel). All food values are in grams. The error values noted here represent less accurate estimates the further away they are from zero, either in the positive or negative direction. There are no min and max values to error measures. | Posted | Mean | Standard Deviation | grams | Visit 1 |
|
4 hours
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | All Participants | All individuals who completed the study | 0 |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Brian Roe | Department of Agricultural, Environmental & Development Economics, Ohio State University | 614-688-5777 | roe.30@osu.edu |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Jan 26, 2022 | Dec 17, 2024 | Prot_SAP_005.pdf |
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| ID | Term |
|---|---|
| D005247 | Feeding Behavior |
| ID | Term |
|---|---|
| D001522 | Behavior, Animal |
| D001519 | Behavior |
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A subset of subjects will complete Phase I, which is the lab-based portion of the study, prior to the RCT.
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| Natural Environment/Reduce Food Waste | Behavioral | Participants will use the FoodImage app to capture data on food purchases, food waste that occurs during food preparation, food waste that is present after eating, and food waste from food purges in free-living conditions. Participants will use the app to record food waste for approximately 4-7 days over the subsequent week. They will also be provided with the following:
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| years |
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| Sex: Female, Male | Count of Participants | Participants |
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| Race (NIH/OMB) | Count of Participants | Participants |
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| Avoidable waste | Mean | Standard Deviation | grams/week |
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| OG001 | Diary: Visual Estimation | Participants will use pen and paper food records to measure food waste during simulated shopping trip and kitchen clean-out. Measurements will be collected by participants while lab personnel directly weigh foods to provide the criterion value. |
| OG002 | Diary With a Scale | Participant estimated food waste where a pen and paper diary was used accompanied by a scale. |
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| Secondary | Phase 2: Weight of All Household Waste | Difference in change in total weight of all sources of household food waste. | Posted | Least Squares Mean | Standard Error | grams | Baseline to Day 14 |
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| 40 |
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| 40 |
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