{smcl}
{.-}
help for {cmd:gmissing}
{.-}

{title: Missing data patterns for genetic data}

{p 8 27}
{cmd: gmissing}
[{it:varlist}]
[{cmd:if} {it:exp}]
[{cmd:in} {it:range}]
[{cmd:,}
	{cmdab:post:fix}{cmd:(}{it: string1 string2}{cmd:)}
]
{p_end}

{title:Description}

{p}
This program displays missing data patterns for genetic data 
The genotype at each locus is assumed to can be coded as a pair of 
variables, whose names have a common stub followed by different 
postfixes. For example, an SNP named {it:snp1} might be coded in the variables 
{cmd:snp1_1} and {cmd:snp1_2}.

{p}
The program displays the proportion of missing values at each locus, the 
proportion of records with missing genotypes at any locus, and the frequency 
of each missing data pattern. By default, the program considers all loci 
but a restricted set may be specified by including a {it:varlist}.

{title:Options}

{p 0 4}
{cmdab:post:fix}{cmd:(}{it:string1 string2}{cmd:)} gives the two postfix 
strings which must be added to the locus name stub
to give the two variables used for allele coding of the locus. 
Default values are {bf:_1} and {bf:_2}  
{p_end}