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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Accepted: 3 June 1998
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Kirk, K., Hickie, I. & Martin, N. Fatigue as related to anxiety and depression in a community-based sample of twins aged over 50. Soc Psychiatry Psychiatr Epidemiol 34, 85–90 (1999). https://doi.org/10.1007/s001270050116
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DOI: https://doi.org/10.1007/s001270050116