What is a QALY?
- The length of life can be measured in trials, but will often require extrapolation beyond this period using assumptions and other data sources. For example, if we know that a drug reduces cholesterol and we know that cholesterol is linked to heart disease and therefore to mortality, we can use this information to estimate length of life. Alternatively, we can use large epidemiology studies that help estimate life expectancy based on conditions, age and gender.
- Quality of life is measured on a 0 – 1 scale and this score represents the value of different levels of health. We’ll be exploring what these numbers mean and where they come from later on in the week.
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