Linked Life Data

12244036

Source:http://linkedlifedata.com/resource/pubmed/id/12244036

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2002-9-23
pubmed:abstractText
Although methods of collecting food intake data have been studied intensively, there have been fewer investigations into the collection of supplement intake data. Use of eight types of vitamin and mineral supplements was reported between 1994 and 1997 by 2,377 subjects participating in a calibration substudy of the Hawaii-Los Angeles Multiethnic Cohort Study. Subjects gave information on supplement use as part of a dietary questionnaire (administered twice) and during three 24-hour dietary recalls. Multivitamins were the most commonly used supplements (55% of the subjects), followed by vitamin C (40%), vitamin E (33%), and calcium (29%). Vitamin A, beta-carotene, selenium, and iron supplements were each used by fewer than 10% of the subjects. Weighted kappa statistics for agreement between the recalls and the questionnaire across six categories of frequency of use ranged from 0.74 for vitamin E to 0.16 for vitamin A and were generally higher for frequently used supplements. The reproducibility of questionnaire responses at two time points varied from 0.64 to 0.39. In comparison with three recalls, a brief questionnaire can accurately and reproducibly capture data on supplement use for frequently consumed products, but it may perform less well for products used less often or more intermittently.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0002-9262
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
156
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
669-75
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Comparison of two instruments for quantifying intake of vitamin and mineral supplements: a brief questionnaire versus three 24-hour recalls.
pubmed:affiliation
Cancer Etiology Program, Cancer Research Center of Hawaii, University of Hawaii, Honolulu, HI 96813, USA. suzanne@crch.hawaii.edu
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S.