Adjusting for cross-cultural differences in computer-adaptive tests of quality of life.

16 Feb 2018

Quality of life differs between individuals and across different cultures. Traditional methods of comparing quality of life (QoL) between cultures, for example comparing ordinal summary scores from scales in different cultures, do not allow for nuanced differences in the interpretation of items. Though considerable development work was conducted to ensure that items of the World Health Organisation Quality of Life (WHOQOL) measures were developed and validated in a manner that enhanced semantic and conceptual equivalence [1,2], previous research has identified issues with metric equivalence between language versions of the WHOQOL-100 questionnaire [3]. The current study aims to evaluate the metric equivalence of a 40-item bank derived from the WHOQOL-100 and to statistically compensate for different response behaviours between cultures.