Week+2+Dietary+Instruments+Presentation

Week+2+Dietary+Instruments+Presentation - Nutrition 117...

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Nutrition 117 Dietary Instruments Elaine Souza, MPH RD USDA, ARS, WHNRC Elaine.souza@ars.usda.gov Ellen Bonnel, PhD USDA, ARS, WHNRC Ellen.bonnel@ars.usda.gov   10/04/10
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What is Diet Assessment? Diet Assessment : Collecting data on the usual food  intake of an individual or group, and translating that to  nutrient intake. Instruments : What tools or instruments are used to  collect the diet (food intake) data? Databases : What databases are used to translate the  diet (food intake) data into nutrient data (kcals of  Energy, grams of protein, mg of calcium)?
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Instruments in Diet Assessment GOAL: To understand the instruments  used in diet assessment Instruments Food Frequency Questionnaire (FFQ) Food Records  24-hour Recall
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FFQ Procedures Choose an FFQ Staff-Administered vs. Self-Administered Instruct volunteer, client, or patient Review FFQ for errors and completeness Batch results for scanning and analysis
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FFQ Considerations What is the time frame that you want to  measure food intake (6 month, 1 year) What is the study population size Will staff need training to administer Who will instruct the volunteer, client, or  patient FFQ Scanning procedure
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Strengths & Limitations: Food Frequency Questionnaires Strengths Useful for surveying large  populations Measures long term dietary  intake Estimates the relative dietary  intakes for groups, not  individuals Processing is usually  computerized & relatively  inexpensive Limitations Estimates relative  intake  rather than absolute  intake Does not accurately measure  an individual’s dietary intake Requires high literacy of the  respondent or requires a staff  interview It is closed ended. The  number of food choices are  limited. A respondent cannot  add foods not on the list.
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Food Frequency Questionnaire How often Never A few times per year Once a month 2-3 times per month per week 2 times per week 3-4 times per week 5-6 times per week Every day Broccoli How much A B C D Carrots, or mixed vegetables or stews containing carrots How much A B C D Corn How much A B C D
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Diet Record Procedure
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This note was uploaded on 11/21/2010 for the course NUT 72880 taught by Professor Clifford during the Fall '10 term at UC Davis.

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Week+2+Dietary+Instruments+Presentation - Nutrition 117...

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