Plausible Reports of Energy Intake May Predict Body Mass Index in Pre-Adolescent Girls

Jennifer S. Savage, Diane C. Mitchell, Helen Smiciklas-Wright, Danielle Symons Downs, Leann L. Birch

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Inaccurate reporting of energy intake makes it difficult to study the associations between diet and weight status. This study examined reported energy intake at age 9 years as a predictor of girls' body mass index (BMI) at age 11 years, before and after adjusting for parents' BMI and girls' pubertal status. This prospective, observational cohort study included 177 non-Hispanic white girls and their parents. When the subjects were 9 years of age, three 24-hour recalls were used to categorize girls as plausible or implausible over-reporters and under-reporters based on previously published methods. Height and weight was measured to calculate BMI. Linear and hierarchical regression analyses were used to predict girls' BMI. Results revealed that girls who under-reported had significantly higher BMIs than plausible and overreporters. Among the total sample and among implausible reporters, reported energy intake was not a significant predictor of BMI; however, among plausible reporters, reported energy intake explained 14% of the variance in BMI and remained a significant predictor after adjusting for parental BMI and girls' pubertal status. Systematic bias related to underreporting in dietary data can obscure relationships with weight status, even among young girls. A relatively simple analytical procedure can be used to identify the magnitude and nature of reporting bias in dietary data.

Original languageEnglish (US)
Pages (from-to)131-135
Number of pages5
JournalJournal of the American Dietetic Association
Volume108
Issue number1
DOIs
StatePublished - Jan 1 2008

Fingerprint

Energy Intake
body mass index
energy intake
Body Mass Index
Weights and Measures
Parents
cohort studies
Observational Studies
Linear Models
Cohort Studies
Regression Analysis
Diet
diet

All Science Journal Classification (ASJC) codes

  • Food Science
  • Nutrition and Dietetics

Cite this

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abstract = "Inaccurate reporting of energy intake makes it difficult to study the associations between diet and weight status. This study examined reported energy intake at age 9 years as a predictor of girls' body mass index (BMI) at age 11 years, before and after adjusting for parents' BMI and girls' pubertal status. This prospective, observational cohort study included 177 non-Hispanic white girls and their parents. When the subjects were 9 years of age, three 24-hour recalls were used to categorize girls as plausible or implausible over-reporters and under-reporters based on previously published methods. Height and weight was measured to calculate BMI. Linear and hierarchical regression analyses were used to predict girls' BMI. Results revealed that girls who under-reported had significantly higher BMIs than plausible and overreporters. Among the total sample and among implausible reporters, reported energy intake was not a significant predictor of BMI; however, among plausible reporters, reported energy intake explained 14{\%} of the variance in BMI and remained a significant predictor after adjusting for parental BMI and girls' pubertal status. Systematic bias related to underreporting in dietary data can obscure relationships with weight status, even among young girls. A relatively simple analytical procedure can be used to identify the magnitude and nature of reporting bias in dietary data.",
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Plausible Reports of Energy Intake May Predict Body Mass Index in Pre-Adolescent Girls. / Savage, Jennifer S.; Mitchell, Diane C.; Smiciklas-Wright, Helen; Symons Downs, Danielle; Birch, Leann L.

In: Journal of the American Dietetic Association, Vol. 108, No. 1, 01.01.2008, p. 131-135.

Research output: Contribution to journalArticle

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