Page 51 - Development of Questionnaires for Quantitative Medical Research
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2002). For example, there is no device that
measures health-related quality of life of a study
subject and therefore, the feedback provided by the
study subjects will be derived from their answers
to a set of questions which are currently used to
measure their health-related quality of life. Based
on Figure 2.1, there are eight latent variables that
represent the measure for health-related quality of
life which consists of physical activities, social
activities, role activities due to physical problems,
bodily pain, mental health, role activities due to
emotional problems, vitality, and the general
health condition (Ware and Sherbourne, 1992).
