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The most
difficult part of any approach combining data on quality of life and length of life, is
how to measure quality of life. How should one value health states numerically on a scale
of zero to one? Many philosophical questions as well as questions regarding the limits of
natural sciences are aroused. The first requirement of a valid measurement is that one
know what one is measuring. The concept of quality of life is, however, vaguely defined,
and different people as well as different cultures may have very different opinions of the
main elements of a good life. |
