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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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slide1

Dietary Assessment Components in the NHANES

Centers for Disease Control and Prevention

National Center for Health Statistics

nhanes nutrition assessments

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
nhanes nutrition assessments3

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
dietary behavior assessments
Dietary Behavior Assessments
  • Dietary supplements use
  • Milk consumption patterns
  • Salt use
  • Breastfeeding practices
  • Weight control practices
  • Eating-out habits
  • Use of special diets
dietary behavior assessments5
Dietary Behavior Assessments
  • Vegetable consumptions
  • Alcohol consumptions
  • Meal patterns for elderly
  • Poultry skin/Meat fat trimming
  • Plain water consumptions
  • Fish and shellfish consumptions
food security assessments
Food Security Assessments
  • Food security modules

Low income family

Household food security

Individual food security

  • Food programs participation
dietary recall component nhanes 1999 2001
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

slide9

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
nhanes 1999 2001 and dimes

Sample persons screened and

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
dietary recall interview system nhanes 1999 2001
Dietary Recall Interview System NHANES 1999-2001
  • Electronic recording form
  • Structured interview format

Multiple pass format

Standardized food probes

Additions to foods

Combination type coding

  • Flexible update options
dietary recall interview system nhanes 1999 200112
Dietary Recall Interview System NHANES 1999-2001

Multiple Pass Format

Quick List

Time, Occasion and Place

(includes Frequently Forgotten Foods List)

Food Details

Final Review

dietary recall data processing nhanes 1999 2001
Dietary Recall Data Processing 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
dietary recall quality control
Dietary Recall Quality Control
  • Completeness & reliability review
  • Online food probe review
  • Electronic communications with interviewers
  • Taped interviews
  • Double coding
  • Coder reports
  • Field observation
nhanes 1999 2000 dietary public release files
NHANES 1999-2000Dietary Public Release Files
  • Total nutrient intakes file
  • Individual foods file
  • Dietary behavior questionnaire file
  • Weight history questionnaire file
slide19

NHANES 2002 Dietary Assessment

  • 24-hour dietary recall (new USDA automated system)
slide22

NHANES 2002 Dietary Assessment

  • 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
dietary assessment across nhanes breadth and depth of components

food frequency (FFQ)

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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