American Journal of Epidemiology Vol. 121, No. 1: 120-130
Copyright © 1985 by The Johns Hopkins University School of Hygiene and Public Health
research-article |
EFFECTS OF INTRAINDIVIDUAL AND INTERINDIVIDUAL VARIATION IN REPEATED DIETARY RECORDS
1Department of Nutritional Sciences, University of Wisconsin-Madison 1415 Linden Drive, Madison, WI 53706. (Reprint requests to Dr. Nancy E. Johnson.)
3Biogerontology Laboratory, Department of Preventive Medicine, University of Wisconsin-Madison Madison, WI
In this study 5,115 daily diet records were collected from 151 women on two randomly selected days per sampling month (29 days) over a two-year period. Yearly estimates of the ratios of intraindividual 
and intenndividual 
variance components were calculated for dietary intake of 15 nutrients and for dietary intake + vitamin/mineral supplements. From one year to the next, corresponding ratios of / were nearly identical. Intraindividual variation in dietary intake of all 15 nutrients was greater than interindividual variation 
. Variance component ratios for highly supplemented nutrients such as iron, vitamin C and B vitamins were less than one 
. Using the ratios of w2/b2, it was calculated that between six and 99 repeated records measuring dietary intake and between two and 31 records measuring total intake may be needed per individual to ensure that the estimate of the population correlation (pDF) between an lndividual's "usual" dietary intake or total intake of a dietary risk factor and an individual's mean or usual level of a physiologic risk factor was within 10% of the true population correlation coefficient (pxy). It was also found that twice as many dietary records per individual were required to estimate the population slope (ßxy) within 10%. These results have serious implications for the design and analysis of prospective nutritional studies.
coronary disease; epidemiologic methods; nutrition surveys; osteoporosis
2Dr. Sempos' current address: Food and Drug Administration, Division of Nutrition, Washington, DC.
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  C. Estaquio, K. Castetbon, E. Kesse-Guyot, S. Bertrais, V. Deschamps, L. Dauchet, S. Peneau, P. Galan, and S. Hercberg The French National Nutrition and Health Program Score Is Associated with Nutritional Status and Risk of Major Chronic Diseases J. Nutr., May 1, 2008; 138(5): 946 - 953. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. Tasevska, S. A. Runswick, and S. A. Bingham Urinary Potassium Is as Reliable as Urinary Nitrogen for Use as a Recovery Biomarker in Dietary Studies of Free Living Individuals J. Nutr., May 1, 2006; 136(5): 1334 - 1340. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. L. Carriquiry and G. Camano-Garcia Evaluation of Dietary Intake Data Using the Tolerable Upper Intake Levels J. Nutr., February 1, 2006; 136(2): 507S - 513S. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. H. Ledikwe, H. M. Blanck, L. K. Khan, M. K. Serdula, J. D. Seymour, B. C. Tohill, and B. J. Rolls Dietary Energy Density Determined by Eight Calculation Methods in a Nationally Representative United States Population J. Nutr., February 1, 2005; 135(2): 273 - 278. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. B. E. Livingstone and A. E. Black Markers of the Validity of Reported Energy Intake J. Nutr., March 1, 2003; 133(3): 895S - 920. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. L. Carriquiry Estimation of Usual Intake Distributions of Nutrients and Foods J. Nutr., February 1, 2003; 133(2): 601S - 608. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
U. Palaniappan, R. I. Cue, H. Payette, and K. Gray-Donald Implications of Day-to-Day Variability on Measurements of Usual Food and Nutrient Intakes J. Nutr., January 1, 2003; 133(1): 232 - 235. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 B. J Venn, J. I Mann, S. M Williams, L. J Riddell, A. Chisholm, M. J Harper, and W. Aitken Dietary counseling to increase natural folate intake: a randomized, placebo-controlled trial in free-living subjects to assess effects on serum folate and plasma total homocysteine Am. J. Clinical Nutrition, October 1, 2002; 76(4): 758 - 765. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Nyambose, K. G. Koski, and K. L. Tucker High Intra/Interindividual Variance Ratios for Energy and Nutrient Intakes of Pregnant Women in Rural Malawi Show That Many Days Are Required to Estimate Usual Intake J. Nutr., June 1, 2002; 132(6): 1313 - 1318. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 P. H. Casey, K. Szeto, S. Lensing, M. Bogle, and J. Weber Children in Food-Insufficient, Low-Income Families: Prevalence, Health, and Nutrition Status Arch Pediatr Adolesc Med, April 1, 2001; 155(4): 508 - 514. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Ballew, B. A Bowman, A. L Sowell, and C. Gillespie Serum retinol distributions in residents of the United States: third National Health and Nutrition Examination Survey, 1988-1994 Am. J. Clinical Nutrition, March 1, 2001; 73(3): 586 - 593. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
V. Persson, A. Winkvist, T. Ninuk, S. Hartini, T. Greiner, M. Hakimi, and H. Stenlund Variability in Nutrient Intakes among Pregnant Women in Indonesia: Implications for the Design of Epidemiological Studies Using the 24-h Recall Method J. Nutr., February 1, 2001; 131(2): 325 - 330. [Abstract] [Full Text]
|
|
|
|
|
|
D. Rose, J.-P. Habicht, and B. Devaney Household Participation in the Food Stamp and WIC Programs Increases the Nutrient Intakes of Preschool Children J. Nutr., March 1, 1998; 128(3): 548 - 555. [Abstract] [Full Text]
|
|
|
|
|
|
P. M. Guenther, P. S. Kott, and A. L. Carriquiry Development of an Approach for Estimating Usual Nutrient Intake Distributions at the Population Level J. Nutr., June 1, 1997; 127(6): 1106 - 1112. [Abstract] [Full Text]
|
|