Lin, Ting - In: PharmacoEconomics 24 (2006) 9, pp. 917-925
<Emphasis Type="Bold">Introduction: This study investigated the effects of imputing missing data in the WHO Quality of Life Abbreviated Questionnaire (WHOQOL-BREF). The imputation results from both the item and domain levels were compared and the impact of the missing data rate and the number of items included for...</emphasis>