The objective of this pilot study was to evaluate the Danish translation of
the WHO Quality of Life Questionnaire, the WHOQOL, by means of the psychom
etric properties of the Danish version. The translation method followed the
WHO standard procedures, including forward and backward translation, focus
group discussions, and assessment of response choice weighting through vis
ual analogue scales. In the study we evaluated the applicability of the WHO
QOL in patients with physical and mental disorders compared with a sample o
f healthy controls. The WHOQOL was compared with health-related quality of
life questionnaire SF36 (Short Form 36). The internal consistency or homoge
neity of the Danish WHOQOL was found adequate, and its applicability and it
s performance in distinguishing between population groups were satisfactory
. The abbreviated version of WHOQOL-100, the WHOQOL-BREF, was analysed sepa
rately and was also found psychometrically valid. The WHOQOL is a questionn
aire that is easy to administer, and it seems applicable for use.