Re: Cohen data suspect at best

[BERNARD L COHEN <blc+@PITT.EDU>]

On Mon, 28 Jan 2002, Rad health wrote:



> Dr. Cohen and others,

>

> One last question, I think one of the problems with using aggregate data is

> its poor quality.  For example, Dr. Field told me that if you were using

> census track data to determine how many black people were in a certain area,

> it would be correct less than 20% of the time.  Lung cancer as well as

> smoking rates rates are much higher for blacks so this could not be

> stratified correctly using your data. Also, education levels are only

> correct about half of the time for women and less than half the time for

> black women.  How could you hope to use these data for stratification?



	--Why don't you put this in a Letter to the Editor?



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