Dr. R.W. Keen rkeen at hgmp.mrc.ac.uk
Thu Sep 26 08:55:44 EST 1996

When dealing with a quantitative trait (QT) (i.e blood pressure) it is usual to 
define disease at one extreme of the normal distribution. If selecting probands/
sibs at this extreme is it possible to work out a familial risk ratio for this
"disease" state or is this wrong? Does anyone out there know if you can 
calculate familial risk (using Risch's model) for a QT or is there another way.


Dr Richard Keen 

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