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Sökning: WFRF:(Messerer M)

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  • Messerer, M, et al. (författare)
  • Sensitivity and specificity of self-reported use of dietary supplements
  • 2004
  • Ingår i: European Journal of Clinical Nutrition. - Karolinska Inst, Natl Inst Environm Med, Dept Nutr Epidemiol, SE-17177 Stockholm, Sweden. : NATURE PUBLISHING GROUP. - 0954-3007 .- 1476-5640. ; 58:12, s. 1669-1671
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To evaluate the sensitivity and specificity of a self-administered food frequency questionnaire (FFQ) - used in a cohort of 48 000 men to determine dietary supplement use. Design: Questionnaire data regarding use of dietary supplements were compared with 14 24-h recall interviews spread over a year. Setting and subjects: A random sample of 248 middle-aged and elderly Swedish men was included in the analysis. Results and conclusions: Use of any supplement in at least one interview was reported by 51% ( in three or more interviews by 38%). Sensitivity and specificity of the FFQ regarding any supplement use was 78 and 93%, respectively. Sensitivity for multivitamins, vitamins C and E was 69, 67 and 78%, respectively. The sensitivity increased to 93% and the specificity decreased to 88% when a user was defined as a person reporting use in at least three interviews. Conclusions: Dietary supplement use might be measured by a self-administered questionnaire relatively well especially when supplements are used more regularly.
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