John Attwood has kindly made available ETDT at his ftp site.
ETDT consists of a suite of programs to carry out the extended
transmission disequilibrium test, which can be applied to
markers having more than two alleles using a logistic regression
analysis devised by Pak Sham. The programs are available from
ftp.gene.ucl.ac.uk, in /pub/packages/dcurtis/etdt.zip.
Unfortunately they are only available as DOS executables as I do
not have public domain code for the necessary matrix
decompositions. The basis of the test is described in our
forthcoming paper:
Sham PC and Curtis D, 1995. An extended transmission/disequilibrium
test (TDT) for multi-allele marker loci. Ann Hum Genet, 59: 323-336.
Please feel free to contact me with questions and comments.
Dave Curtis
dcurtis at hgmp.mrc.ac.ukhttp://www.iop.bpmf.ac.uk/home/depts/psychmed/general/dcurtis/dcurtis.htm
Dave Curtis (dcurtis at hgmp.mrc.ac.uk)
http://www.iop.bpmf.ac.uk/home/depts/psychmed/general/dcurtis/dcurtis.htm
