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help for ^genhw^                                            (STB-48: sg110)
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Hardy-Weinberg equilibrium test                 
-------------------------------

^genhw^ all1 all2 [weight] [^if^ exp] [^in^ range]
 				  [^,^ ^bin^var]

^genhwi^ #AA #Aa #aa [^,^ ^l^abel^(^genotypes^)^ ^bin^var]

^fweight^s are allowed; see help @weights@.


Description
-----------

^genhw^ estimates allele, genotype frequencies and disequilibrium coefficients
for codominant traits or data of completely known genotypes, and performs
asymptotic Hardy-Weinberg (HW) equilibrium tests. In the case of two alleles
it also calculates an exact HW significance probability.

^genhw^ expects each observation to contain the values of the two alleles at
the locus being examined (all1 and all2).  Allele values can be numeric or
string.

^genhwi^ is the immediate form of ^genhw^ using the genotypic counts on the
command line; where #AA, #Aa and #aa are the counts for the AA, Aa and aa
genotypes.  Note that this command only works for biallelic loci.


Options
-------

^binvar^ specifies that binomial standard errors be reported. These standard
errors are calculated assuming that the population is in Hardy-Weinberg
equilibrium.  By default, standard errors that do not require this assumption
are reported.

^label^ specifies labels to be used in the output of the genotype frequency
table. This option is only valid for the immediate form of the command.


Examples
--------

 . ^genhw a1 a2^
 . ^genhw a1 a2, binvar^
 . ^genhwi 12 30 19 , binvar label(AA Aa aa)^
 . ^genhwi 12 30 19


Author
------

       Mario Cleves
       Stata Corporation
       mcleves@@stata.com


Also see
--------

    STB:  STB-48 sg110
 Manual:  [R] symmetry 
On-line:  help for @symmetry@