Reproducibility and comparability of a computerized, self‐administered food frequency questionnaire
Abstract
A self-administered dietary assessment questionnaire was developed for the microcomputer to identify individuals whose dietary patterns may put them at risk for cancer. It was tested among 50 adult volunteers in a New York school district. The quantitative food frequency portion of the questionnaire (FFQ), administered twice one month apart, was reproducible for calories, fat, percentage of calories from fat, cholesterol, vitamin A, vitamin C, calcium, and dietary fiber (Spearman r = 0.56-0.87). To test for relative validity, individual nutrient intake calculated from each administration of the FFQ was compared with the nutrient intake calculated from seven-day food records collected one month after the second FFQ administration. Nutrient intake from the first and second FFQ compared with food record nutrient intake yielded a Spearman's correlation coefficient of 0.58 and 0.62, respectively, for percentage of kilocalories from fat. No significant difference in mean intake of percentage of calories from fat was found between the FFQ 1 and FFQ 2 or between the FFQs and the food record. However, there were significant differences between mean food record and FFQ estimates of kilocalories, fat, vitamin A, vitamin C, calcium, and dietary fiber. We concluded that computerized nutrient assessment, which utilizes the subject in data entry, may be suitable for some clinical and educational uses and research studies of intake of fat as a percentage of calories among healthy adults.
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The mean unadjusted correlation coefficient (r=.75) for energy and nutrient intake compared well with previous studies on both computerized and non-Web-based FFQ.
“The mean unadjusted correlation coefficient (r=.75) for energy and nutrient intake compared well with previous studies on both computerized [21,30-31] and non-Web-based FFQ [23,32-35].”
From Online dietary intake estimation: reproducibility and validity of the Food4Me Food frequency questionnaire against a 4-day weighed food record (2014) · cites this paper as [30]
This validation study had an adequate sample size similar to those used in previous studies.
“In addition, this validation study had an adequate sample size [15] similar to those used in previous studies [30,45-46].”
From Online dietary intake estimation: reproducibility and validity of the Food4Me Food frequency questionnaire against a 4-day weighed food record (2014) · cites this paper as [30]
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- Authors
- Engle, A., Lynn, L. L., Koury, K., & Boyar, A. P.
- Affiliations
- Institute for Cancer Prevention (US)
- Lehman College (US)
- Venue
- Nutrition and Cancer
- Publisher
- Informa UK Limited
- Published
- 1990-01
- Volume
- 13
- Issue
- 4
- Pages
- 281-292
- ISSN
- 0163-5581 (ISSN-L)
- 1532-7914
- OpenAlex
- W1974571932
- Cited by
- 50
- References
- 46
- Citations by year
- 2025: 1 · 2022: 1 · 2021: 1 · 2017: 2 · 2016: 2 · 2014: 3 · 2012: 1
- FWCI
- 3.34
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Nutrition and Cancer (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (1r03ca041144-01, 5u01ca040839-03)
- National Cancer Institute (CA 40839, CA-41144)
- Topics
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutrition and Health Studies
- Health Sciences › Nursing › Nutrition and Dietetics › Nutrition, Health and Food Behavior
- Keywords
- food frequency questionnaire, reproducibility, comparability, self-administered questionnaire, relative validity, food diary, nutrient intake estimation, dietary fat intake, cancer risk
- MeSH terms
- Energy Intake, Computers, Dietary Fats, Eating, Evaluation Studies as Topic, Feeding Behavior, Humans, Microcomputers, Minerals, Neoplasms, Nutritive Value, Surveys and Questionnaires, Risk Factors, Vitamins
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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