{smcl}
{* 10feb2014}{...}
{cmd:help varcheck}
{hline}

{title:Title}

{p 4 16 2}{...}
{hi:varcheck} {hline 2} Varcheck summarizes variables' missing observation.

{title:Syntax}

{p 8 14 2}
{cmd:varcheck} {it:varlist}{cmd:,} 
{cmd:by(}{it:varname}{cmd:)}
 
{title:Description} 

{pstd} {cmd:varcheck} constructs a table that shows the percentage of observations
missing for each variable in {it:varlist} for each value of {it:varname}. It is meant to quickly 
ascertain whether certain variables are available for certain waves of a longitudinal 
survey.

{title:Options}

{phang} {cmd:by(}{it:varname}{cmd:)} allows user to determine missing observations
{it:by} a variable. For example, if you want to know % missing for each year or 
wave of a survey, you'd use the {cmd:by} command.

{title:Examples}

{pstd}{cmd:. varcheck age birthmonth birthyear, by(wave)}{break}
{cmd:. varcheck *, by(surveyyear)}

{title:Author}

{pstd}Jeremy Nighohossian{break}
FTI Corporation{break}
Washington, DC{p_end}