AJCN Tufts Nutrition Symposium, Boston Sept 24-26
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Purchase Article
Right arrow View Shopping Cart
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Looker, A. C.
Right arrow Articles by Gunter, E. W.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Looker, A. C.
Right arrow Articles by Gunter, E. W.
Agricola
Right arrow Articles by Looker, A. C.
Right arrow Articles by Gunter, E. W.

American Journal of Clinical Nutrition, Vol 52, 541-547, Copyright © 1990 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Within-person variance in biochemical indicators of iron status: effects on prevalence estimates

AC Looker, CT Sempos, KA Liu, CL Johnson and EW Gunter
Division of Health Examination Statistics, National Center for Health Statistics, Hyattsville, MD 20782.

The effect of within-person variance on prevalence estimates from population distributions based on a single measurement was examined for hematologic and iron-status indicators collected in the Hispanic Health and Nutrition Examination Survey (HHANES). Within-person to between- person variance ratios (W:Bs) were estimated for 11 indicators by using data from 80 persons who provided blood twice in HHANES. Distributions of selected iron-status indicators from 20-44-y-old Mexican American females from HHANES were adjusted for within-person variance by using the W:B estimates, and prevalences of low values based on the original and adjusted distributions were compared. W:B were less than 1 for the majority of the indicators. Nonetheless, prevalences of low values from the original distributions were inflated when commonly used cutoff values were applied. Within-person variance in serum analytes needs to be controlled when the prevalence of a condition in populations is assessed.


This article has been cited by other articles:


Home page
 Am. J. Clin. Nutr.Home page
M. S Calvo, S. J Whiting, and C. N Barton
Vitamin D fortification in the United States and Canada: current status and data needs
Am. J. Clinical Nutrition, December 1, 2004; 80(6): 1710S - 1716S.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Clin. Nutr.Home page
C. Gillespie, C. Ballew, B. A Bowman, R. Donehoo, and M. K Serdula
Intraindividual variation in serum retinol concentrations among participants in the third National Health and Nutrition Examination Survey, 1988-1994
Am. J. Clinical Nutrition, April 1, 2004; 79(4): 625 - 632.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Clin. Nutr.Home page
N. Zavaleta, L. E Caulfield, and T. Garcia
Changes in iron status during pregnancy in Peruvian women receiving prenatal iron and folic acid supplements with or without zinc
Am. J. Clinical Nutrition, April 1, 2000; 71(4): 956 - 961.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Clin. Nutr.Home page
S. S Morris, M. T Ruel, R. J Cohen, K. G Dewey, B. de la Briere, and M. N Hassan
Precision, accuracy, and reliability of hemoglobin assessment with use of capillary blood
Am. J. Clinical Nutrition, June 1, 1999; 69(6): 1243 - 1248.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1990 by The American Society for Nutrition