Page 107: Once the subject has decided how much time she would be willing to sacrifice for better health, the HRQL score is obtained by dividing the life expectancy in the state of illness by life expectancy in perfect health.

That text was supposed to have been deleted. Please ignore.

PAGE 119: Referring to figure 8.1, " ..the average treated person in the graph lived twelve years and the average untreated person thirteen years." 

This should read, " ..the average treated person in the graph lived thirteen years and the average untreated person twelve years."

Table 8.4. Note that the number dying value is adjusted for infant mortality. This is not explained in the text. The problem with calculating deaths in the first year of life is that most of the deaths occur very close to the time of birth. Therefore, the assumption that most deaths occur at mid-interval (0.5) does not hold. The correction factor for the first year of life can be obtained from the Centers for Disease Control and Prevention for the year of interest at: http://www.cdc.gov/nchs/products/life_tables.htm

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© 2002 Peter Muennig, MD, MPH. Last update: Dec 14, 2005.