Fatigue as related to anxiety and depression in a community-based sample of twins aged over 50

  • K. M. Kirk
  • I. B. Hickie
  • N. G. Martin
ORIGINAL PAPER

Abstract

Measures of fatigue, anxiety and depression were administered in self-report questionnaire format to a community-based sample of 2703 Australian twins aged over 50. Factor analysis indicated that a two-factor solution was appropriate and demonstrated a clear separation between fatigue-related items and questionnaire items relating to anxiety and depression. Highly congruent factor structures were derived for male and female subjects.

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Copyright information

© Steinkopff Verlag 1999

Authors and Affiliations

  • K. M. Kirk
    • 1
  • I. B. Hickie
    • 2
  • N. G. Martin
    • 1
  1. 1.Epidemiology Unit, Queensland Institute of Medical Research, Post Office, Royal Brisbane Hospital, Brisbane QLD 4029, Australia E-mail: kathe@qimr.edu.au, Tel. +61-7-3362 0272, Fax: +61-7-3362 0101AU
  2. 2.School of Psychiatry, University of New South Wales, and Academic Department of Psychiatry, St. George Hospital and Community Health Service, Sydney, New South Wales, AustraliaAU

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