Estimating the Relation between Dietary Intake Obtained from a Food Frequency Questionnaire and True Average Intake

Freedman, Laurence S.; Carroll, Raymond J.; Wax, Yohanan

doi:10.1093/oxfordjournals.aje.a116086

Cited by 99 publications

(65 citation statements)

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“…According to Freedman et al 41 , the low-magnitude of correlation may be a result of several factors, including: biased reporting, where people with high food intake tend to underestimate consumption; reference method bias; variations in food intake during the study period; and difficulties in recalling food intake and correctly estimating food portions.…”

Section: Discussionmentioning

confidence: 99%

Reproducibility, relative validity and calibration of a food frequency questionnaire for adults

Silva¹,

Sichieri²,

Pereira³

et al. 2013

Cad. Saúde Pública

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Section: Discussionmentioning

confidence: 99%

Reproducibility, relative validity and calibration of a food frequency questionnaire for adults

Silva¹,

Sichieri²,

Pereira³

et al. 2013

Cad. Saúde Pública

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“…A comparison to results of similar studies affords insights to the reliability and utility of the NHEXAS-MD dietary exposure data. The principal limitations of various dietary assessment approaches include the reproducibility of consumption measurements (Willett et al, 1985;Feskanich et al, 1993;Xing et al, 1995), the inability of the food record or diary to estimate long-term average intake (Freedman et al, 1991), and the validity of results based on recall methods (Willett et al, 1985;Block and Hartman, 1989;Feskanich et al, 1993;Liu, 1994). The food checklist method used here is a combination of a dietary record and FFQ.…”

Section: Discussionmentioning

confidence: 99%

A longitudinal investigation of solid-food based dietary exposure to selected elements

Scanlon

MacIntosh

Hammerstrom

et al. 1999

J Expo Sci Environ Epidemiol

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As part of a longitudinal investigation of environmental exposures to selected chemical contaminants, the National Human Exposure Assessment Survey (NHEXAS), food consumption and duplicate diet samples were obtained in each of six sampling cycles from up to 80 individuals in Maryland during 1995± 1996. Duplicate diet samples were weighed and analyzed for arsenic, cadmium, chromium and lead and were used to derive average daily intakes of each element. Mean log-transformed concentrations of arsenic and cadmium in duplicate diet samples and derived intakes of chromium were found to vary significantly among sampling cycles. Repeated observations of dietary exposure metrics from the same individual over time were highly variable. The results suggest that distributions of dietary exposure to arsenic and cadmium do vary for a population within a 1-year period, while those for chromium and lead do not. This may result in single measurements of exposure being sufficient to characterize population variability for these latter two elements. However, even for those elements not displaying statistically significant temporal variability for the population, a single dietary exposure measurement may still not be sufficient to characterize accurately chronic dietary exposure levels for individuals.

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“…Our reference instrument is multiple non-consecutive 24-hour recalls. We applied a measurement error model described by Freedman et al 13 to estimate relationships between true intake and the test instruments, assuming that the reference instrument (24-hour recalls) is unbiased at the individual level and contains only within-person error.…”

Section: Measurement Error Modelmentioning

confidence: 99%

Performance of a short tool to assess dietary intakes of fruits and vegetables, percentage energy from fat and fibre

Thompson

Midthune

Subar

et al. 2004

Public Health Nutr.

199

163

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Objectives: We describe the methods used to develop and score a 17-item 'screener' designed to estimate intake of fruit and vegetables, percentage energy from fat and fibre. The ability of this screener and a food-frequency questionnaire (FFQ) to measure these exposures is evaluated. Design: Using US national food consumption data, stepwise multiple regression was used to identify the foods to be included on the instrument; multiple regression analysis was used to develop scoring algorithms. The performance of the screener was evaluated in three different studies. Estimates of intakes measured by the screener and the FFQ were compared with true usual intake based on a measurement error model. Setting: US adult population. Subjects: For development of instrument, n ¼ 9323 adults. For testing of instrument, adult men and women in three studies completing multiple 24-hour dietary recalls, FFQ and screeners, n ¼ 484, 462 and 416, respectively. Results: Median recalled intakes for examined exposures were generally estimated closely by the screener. In the various validation studies, the correlations between screener estimates and estimated true intake were 0.5 -0.8. In general, the performances of the screener and the full FFQ were similar; estimates of attenuation were lower for screeners than for full FFQs. Conclusions: When coupled with appropriate reference data, the screener approach described may yield useful estimates of intake, for both surveillance and epidemiological purposes. Keywords Diet Epidemiological methods Surveillance Validation study Data collection QuestionnairesIn 1998, the US National Cancer Institute (NCI) had the opportunity to develop a supplement to the National Health Interview Survey 2000, a survey of 40 000 adults aged 20 years and above. The supplement, called the Cancer Control Module (CCM), could average no more than 20 min. Areas of interest included cancer-related behaviours, such as participation in cancer screening, smoking, sunlight avoidance, physical activity and diet. The challenge in developing the dietary component was to provide meaningful information about diet in no more than 20 questions. This paper describes our efforts to develop and evaluate a short dietary assessment tool, a 'screener' to estimate usual dietary intake of fruits and vegetables, percentage energy from fat and fibre. We describe the approach used to develop the instrument and analytical scoring procedures and how the new instrument was evaluated in community samples of adults, and report the instrument's ability to estimate mean intakes and its estimated correlation with true intake. Methods Development of instrument Identification of foodsWe were primarily interested in assessing intakes of servings of fruits and vegetables, percentage energy from fat and grams of fibre. To identify which foods best predicted these dietary factors, we analysed dietary intake data (two non-consecutive 24-hour dietary recalls) collected from a nationally representative US sample of the US Department of Agricultur...

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Estimating the Relation between Dietary Intake Obtained from a Food Frequency Questionnaire and True Average Intake

Cited by 99 publications

References 0 publications

Reproducibility, relative validity and calibration of a food frequency questionnaire for adults

Reproducibility, relative validity and calibration of a food frequency questionnaire for adults

A longitudinal investigation of solid-food based dietary exposure to selected elements

Performance of a short tool to assess dietary intakes of fruits and vegetables, percentage energy from fat and fibre

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