CHAPTER 7
WORKING WITH HEALTH-RELATED QUALITY-OF-LIFE MEASURES
OVERVIEW
RECALL THAT a quality-adjusted life year (QALY) may be thought of as a year of life that is lived in perfect health. In Chapter Two, we learned that HRQL scores assume a value between 0 and 1. This ratio may be simply thought of as a continuum of values ranging from perfect health to death. Thus, if a medical intervention adds 10 years of life and each of these years is associated with an HRQL of 0.7, the medical intervention would have resulted in a gain of 0.7 × 10years = 7 years of perfect health (7 QALYs).
In this chapter, we take the first step toward calculating QALYs as we learn the basic theory behind HRQL scores, learn how to obtain HRQL scores for cost-effectiveness ...
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