Dietary Assessment Components in the NHANES
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Dietary Assessment Components in the NHANES. Centers for Disease Control and Prevention National Center for Health Statistics. N. N. NHANES Nutrition Assessments. Physical Examination Anthropometric measurements Nutritional biochemistries and hematologies Dietary Assessment

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Dietary Assessment Components in the NHANES

Centers for Disease Control and Prevention

National Center for Health Statistics


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N

N

NHANES Nutrition Assessments

  • Physical Examination

    Anthropometric measurements

    Nutritional biochemistries and hematologies

  • Dietary Assessment

    Dietary behavior

    Food security

    Nutrient intake and food consumption

  • Physical Fitness and Physical Functioning


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N

N

NHANES Nutrition Assessments

  • Physical Examination

    Anthropometric measurements

    Nutritional biochemistries and hematologies

  • Dietary Assessment

    Dietary behavior

    Food security

    Nutrient intake and food consumption

  • Physical Fitness and Physical Functioning


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Dietary Behavior Assessments

  • Dietary supplements use

  • Milk consumption patterns

  • Salt use

  • Breastfeeding practices

  • Weight control practices

  • Eating-out habits

  • Use of special diets


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Dietary Behavior Assessments

  • Vegetable consumptions

  • Alcohol consumptions

  • Meal patterns for elderly

  • Poultry skin/Meat fat trimming

  • Plain water consumptions

  • Fish and shellfish consumptions


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Food Security Assessments

  • Food security modules

    Low income family

    Household food security

    Individual food security

  • Food programs participation


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Dietary Recall ComponentNHANES 1999-2001

  • 24-hour recall information

    Day 1: 100% sample

    Day 2: 10% sample

  • Eligible sample: all ages

  • Interview administration

    Bilingual dietary interviewers

    Proxy interview for children


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Dietary Interview Mode Evaluation Study (DIMES) in NHANES 1999-2001

  • Conducted on a subsample of NHANES 1999-2000 primary sampling units (PSUs)

  • To evaluate the operational feasibility of the telephone interview mode


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Sample persons screened and 1999-2001

interviewed in household

½ randomly selected for

afternoon or evening exam

½ randomly selected for

morning exam

Appointment made during

exam for 24-hour recall

by telephone

24-hour recall

in-person during exam

Recall by telephone

4-7 days after exam

NHANES 1999-2001and DIMES


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Dietary Recall Interview System 1999-2001 NHANES 1999-2001

  • Electronic recording form

  • Structured interview format

    Multiple pass format

    Standardized food probes

    Additions to foods

    Combination type coding

  • Flexible update options


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Dietary Recall Interview System 1999-2001 NHANES 1999-2001

Multiple Pass Format

Quick List

Time, Occasion and Place

(includes Frequently Forgotten Foods List)

Food Details

Final Review





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Dietary Recall Data Processing 1999-2001 NHANES 1999-2001

  • Electronic file transmittal

  • FIAS coding

    Standardized coding guidelines

    USDA food codes

    Recipe modification option

    Market check procedures

  • USDA 94-98 Survey Nutrient Database


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Dietary Recall Quality Control 1999-2001

  • Completeness & reliability review

  • Online food probe review

  • Electronic communications with interviewers

  • Taped interviews

  • Double coding

  • Coder reports

  • Field observation


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NHANES 1999-2000 1999-2001Dietary Public Release Files

  • Total nutrient intakes file

  • Individual foods file

  • Dietary behavior questionnaire file

  • Weight history questionnaire file


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NHANES 2002 Dietary Assessment 1999-2001

  • 24-hour dietary recall (new USDA automated system)




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NHANES 2002 Dietary Assessment 1999-2001

  • 24-hour dietary recall (new USDA automated system)

  • Second day recall on ALL persons (telephone)

  • Food frequency (focused)

  • General questions

  • Supplements/medications (detailed)

  • Food security


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food frequency (FFQ) 1999-2001

food program participation

other diet-related

Dietary Assessment Across NHANES: Breadth and Depth of Components

Other

Food security

Food program

participation

Supplements

FFQ

24-hr

recall

24-hour recall

supplements

food security


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