The desirability of a condition to people who are not in it themselves is o
nly moderately correlated to the experienced well being of people with the
condition and hardly correlated at all to the worth of those people. A sing
le score for a health state, of the kind used in QALY calculations, cannot
express all these three types of value. The history and current practice of
health economics is highly problematic in this respect. Copyright (C) 2001
John Wiley & Sons, Ltd.