PT  - JOURNAL ARTICLE
AU  - Anna J H M Beurskens
AU  - Ute Bültmann
AU  - IJmert Kant
AU  - Jan H M M Vercoulen
AU  - Gijs Bleijenberg
AU  - Gerard M H Swaen
TI  - Fatigue among working people: validity of a questionnaire measure
AID  - 10.1136/oem.57.5.353
DP  - 2000 May 01
TA  - Occupational and Environmental Medicine
PG  - 353--357
VI  - 57
IP  - 5
4099  - http://oem.bmj.com/content/57/5/353.short
4100  - http://oem.bmj.com/content/57/5/353.full
SO  - Occup Environ Med2000 May 01; 57
AB  - OBJECTIVES To 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. METHODS To 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. RESULTS The 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. CONCLUSIONS The CIS seems to be an appropriate instrument for measuring fatigue in the working population.