Occup Environ Med 2000;57:353-357 ( May )

Fatigue among working people: validity of a questionnaire measure

Anna J H M Beurskens^a, Ute Bültmann^a, IJmert Kant^a, Jan H M M Vercoulen^b, Gijs Bleijenberg^b, Gerard M H Swaen^a

^a Department of Epidemiology, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands, ^b Department of Medical Psychology, University Hospital Nijmegen, The Netherlands

Correspondence to: Dr A Beurskens ajhm.Beurskens{at}epid.unimaas.nl

Accepted 30 December 1999

OBJECTIVESTo evaluate the validity of the checklist individual strength questionnaire (CIS) in the working population. This 20 item self reported questionnaire has often been used in patients with chronic fatigue. To date, no research has focused on the validity of the CIS in occupational groups.
METHODSTo evaluate the discriminant validity the CIS was filled out by five groups of employees with expected differences in fatigue. The convergent validity was evaluated by comparing the results of the CIS with the results of three related measures: measured unidimensional fatigue, burnout, and need for recovery.
RESULTSThe CIS was able to discriminate between fatigued and non-fatigued employees in occupational groups. The expected agreement between the results of the CIS and related measures was confirmed.
CONCLUSIONSThe CIS seems to be an appropriate instrument for measuring fatigue in the working population.


Keywords: fatigue; occupational groups; measurement

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© 2000 by Occupational and Environmental Medicine
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