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FOOD DUDES! Photo Analysis Estimator Training September 2012.

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Presentation on theme: "FOOD DUDES! Photo Analysis Estimator Training September 2012."— Presentation transcript:

1 FOOD DUDES! Photo Analysis Estimator Training September 2012

2 Photo Naming Photo names are the number on the sticker, followed by a dash and then either a 1 or 2. Photo names are the number on the sticker, followed by a dash and then either a 1 or 2. 1 indicates “initial”; food prior to consumption 1 indicates “initial”; food prior to consumption 2 indicates “final”; tray after child has eaten 2 indicates “final”; tray after child has eaten Photo Name: Photo Name:

3 Photo Naming Name the photo as the ID number indicated on the plate with a -1 or -2. Name the photo as the ID number indicated on the plate with a -1 or -2. If a photo is duplicated indicate with a (2). Example: (2) If a photo is duplicated indicate with a (2). Example: (2) Once files are named, put them into one folder and they will automatically line up in order. Once files are named, put them into one folder and they will automatically line up in order. The Reference tray should be named “0-Reference Tray”. This places the tray at the top of the list. The Reference tray should be named “0-Reference Tray”. This places the tray at the top of the list.

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5 Sorting Photos  Sort photos into 3 folders:  1. Pairs  all photos that have both a before and an after picture  2. Unmatched  Photos that are missing either a before or after picture  3. Unidentifiable  Photos that have an ID number, but you cannot read it (too blurry or partially covered up).  Put in as much of the ID number as you can read with a “-” or “*” to fill in missing numbers

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8 Before/After

9 Photo Analysis Overview Following the protocol, compare photos (“before” and “after”) and record the amount of foods consumed on an excel spreadsheet. Following the protocol, compare photos (“before” and “after”) and record the amount of foods consumed on an excel spreadsheet. We are focusing on milk, 100% juice, fruit, and vegetables We are focusing on milk, 100% juice, fruit, and vegetables Your estimates are entered into columns on the prepared Excel spreadsheet Your estimates are entered into columns on the prepared Excel spreadsheet

10 Follow the Protocol Fruits and vegetables – home or school School: School: Look for columns labeled with specific food items served through the lunch line Look for columns labeled with specific food items served through the lunch line It will be specified on how to measure item It will be specified on how to measure item If you find a picture with food item not listed on the spreadsheet or wrong sheet please contact Alyssa. If you find a picture with food item not listed on the spreadsheet or wrong sheet please contact Alyssa. Home lunch: Home lunch: Combine all fruits into categories of canned, fresh, dried or juice Combine all fruits into categories of canned, fresh, dried or juice Combine all vegetables into categories of cooked, raw, canned, or juice. Combine all vegetables into categories of cooked, raw, canned, or juice.

11 Files on your Flash Drive

12 Spreadsheet Overview

13 Spreadsheet Details

14 Important Reminders! You are recording the amount consumed You are recording the amount consumed (photo 1 – photo 2 = consumption) – not the amount remaining on the plate! (photo 1 – photo 2 = consumption) – not the amount remaining on the plate! Always round up to the next “measurable” increment. Always round up to the next “measurable” increment. This is the same for fruits and vegetables measured in pieces. This is the same for fruits and vegetables measured in pieces. Record your estimate in numbers only Record your estimate in numbers only No words or symbols No words or symbols Do not make changes to the spreadsheet formulas or columns Do not make changes to the spreadsheet formulas or columns

15 Completed Spreadsheet

16 Accuracy is Important We need >80% inter-rater agreement We need >80% inter-rater agreement Salad tends to be the trickiest to estimate Salad tends to be the trickiest to estimate Do your best to estimate on tricky trays but do not assume or label all as a 999 Do your best to estimate on tricky trays but do not assume or label all as a 999 Use the reference tray photo! Use the reference tray photo! We will provide training as necessary to obtain this level of agreement We will provide training as necessary to obtain this level of agreement We will contact you if your agreement to the “truth” is <80% We will contact you if your agreement to the “truth” is <80%

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