PMID: 15226472Jul 1, 2004Paper

The validity of questionnaire-based micronutrient intake estimates is increased by including dietary supplement use in Swedish men

The Journal of Nutrition
Maria MessererAlicja Wolk

Abstract

Although many validation studies of FFQ have been reported, only a few addressed the effect of inclusion of dietary supplement use on the validity of micronutrient estimates. The purpose of the present study was to assess reproducibility and validity of a self-administered FFQ, intended to measure total nutrient intake from diet and from dietary supplements, in a random population-based sample of 248 middle-aged and elderly men (40-74 y old) in central Sweden. Fourteen 24-h recall interviews were used as the reference method. Participants were telephoned about once a month for 1 y, covering every day of the week, twice in random order. Spearman correlation coefficients increased 13% (from 0.49 to 0.62), between FFQ-based micronutrient estimates and the fourteen 24-h recall interviews (reference method) when supplement use was included. Correct classification into highest quintiles was also improved by 14% (from 37 to 51%). There were no differences in mean intraclass correlation coefficients for 1-y reproducibility between total micronutrient intake and micronutrients from foods only. The increase in the validity of micronutrient estimates due to inclusion of supplements in nutrient intake assessment has important implications ...Continue Reading

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Citations

Mar 16, 2006·Journal of the National Cancer Institute·Susanna C LarssonAlicja Wolk
Jun 9, 2007·The American Journal of Clinical Nutrition·Emily B LevitanAlicja Wolk
Dec 7, 2007·European Journal of Clinical Nutrition·J KaluzaA Wolk
Mar 26, 2009·International Journal of Cancer. Journal International Du Cancer·Susanna C LarssonAlicja Wolk
Jan 27, 2010·The British Journal of Nutrition·Patricia Henríquez-SánchezLluis Serra-Majem
Sep 16, 2011·Journal of the American College of Nutrition·Elinor FondellKatarina Bälter
Apr 11, 2014·The Journal of Nutrition·Susanna C LarssonAlicja Wolk
Oct 9, 2014·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·Liisa BybergKarl Michaëlsson
May 17, 2014·PloS One·Helena HallströmLiisa Byberg
Jun 14, 2014·Circulation. Heart Failure·Joanna KaluzaAlicja Wolk
May 3, 2015·Neurology·Susanna C LarssonAlicja Wolk
Jun 10, 2016·Journal of the National Cancer Institute·Susanna C LarssonAlicja Wolk
Dec 8, 2016·European Journal of Endocrinology·Josefin E LöfvenborgSofia Carlsson
Nov 30, 2006·International Journal of Cancer. Journal International Du Cancer·Susanna C LarssonAlicja Wolk
Jan 6, 2006·International Journal of Cancer. Journal International Du Cancer·Susanna C LarssonAlicja Wolk
Feb 8, 2007·The American Journal of Clinical Nutrition·Susanna C LarssonAlicja Wolk
Feb 23, 2010·American Journal of Epidemiology·Joanna KaluzaAlicja Wolk
Jan 29, 2010·Public Health Nutrition·Carmen de la Fuente-ArrillagaMiguel Angel Martinez-González
Aug 4, 2011·The British Journal of Surgery·O Sadr AzodiA Wolk
Jun 10, 2011·The American Journal of Clinical Nutrition·Susanna C LarssonAlicja Wolk
Apr 16, 2015·Circulation. Heart Failure·Kirsten S DoransMurray A Mittleman
Nov 21, 2014·The Journal of Nutrition·Susanna C Larsson, Alicja Wolk
Sep 21, 2013·Cancer Causes & Control : CCC·Elisabeth MöllerKatarina Bälter
May 1, 2015·International Journal of Cancer. Journal International Du Cancer·Holly R HarrisAlicja Wolk
Nov 15, 2013·The American Journal of Clinical Nutrition·Karl MichaëlssonHåkan Melhus
Jan 1, 2013·Journal of Nutritional Science·Elisabeth MöllerKatarina Bälter
Feb 13, 2016·Stroke; a Journal of Cerebral Circulation·Susanna C LarssonAlicja Wolk
Jan 26, 2016·International Journal of Cancer. Journal International Du Cancer·Holly R HarrisAlicja Wolk
May 12, 2017·Journal of the American Heart Association·Otto StackelbergMartin Björck
Apr 14, 2016·Circulation. Heart Failure·Susanna C LarssonAlicja Wolk
Jun 1, 2017·Journal of Internal Medicine·S C LarssonA Wolk
May 12, 2017·Journal of Internal Medicine·S C LarssonM Bäck

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