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. 1989 Apr;27(4):507-14.
doi: 10.1111/j.1365-2125.1989.tb05400.x.

Self-report reliability and symptomatology of habitual caffeine consumption

J E James  1 , M S Bruce, M H Lader, N R Scott
Affiliations

Self-report reliability and symptomatology of habitual caffeine consumption

J E James et al. Br J Clin Pharmacol. 1989 Apr.

Abstract

1. A large body of research on the demography of caffeine use and its potential health consequences has been undermined by the absence of empirical data on the reliability of retrospective self-reports of caffeine consumption. 2. The principal aim of the present study was to use standard bioanalytic method to assess the reliability of subjects' self-reported caffeine use. Saliva samples were obtained from 142 first-and second-year medical students and assayed for caffeine and paraxanthine. 3. Self-reported caffeine use was found to be significantly correlated with salivary caffeine (r = 0.31, P less than 0.001) and paraxanthine (r = 0.42, P less than 0.001), thereby providing qualified support for use of questionnaires to estimate patterns of caffeine consumption. 4. A secondary aim of the study was to extend previous research concerning the symptomatology of caffeine use by examining the association between caffeine exposure and a variety of measures of somatic and psychological health. Caffeine consumption was reliably associated with the self-reported occurrence of somatic symptoms, but not psychological well-being.

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References

    1. Postgrad Med. 1972 Dec;52(6):81-5 - PubMed
    1. J Behav Med. 1988 Feb;11(1):15-30 - PubMed
    1. J Lab Clin Med. 1980 Apr;95(4):603-8 - PubMed
    1. Ann Intern Med. 1983 May;98(5 Pt 1):641-53 - PubMed
    1. Br J Addict. 1983 Sep;78(3):251-8 - PubMed

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