stdes.hlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{smcl}
{* 14mar2005}{...}
{cmd:help stdes} {right:dialog:  {bf:{dialog stdes}}}
{hline}

{title:Title}

{p2colset 5 19 21 2}{...}
{p2col :{hi:[ST] stdes} {hline 2}}Describe survival-time data{p_end}
{p2colreset}{...}


{title:Syntax}

{p 8 14 2}
{cmd:stdes} {ifin} [{opt w:eight} {opt nosh:ow}]

{pstd}
You must {cmd:stset} your data before using {cmd:stdes};  see {helpb stset}.

{pstd}
Note that {opt fweight}s, {opt iweight}s, and {opt pweight}s may be specified
using {cmd:stset}; see {helpb stset}.

{pstd}
{cmd:by} may be used with {cmd:stdes}; see {helpb by}.


{title:Description}

{pstd}
{cmd:stdes} produces a summary of the st data in a computer or data-based 
sense rather than in an analytical or statistical sense.

{pstd}
{cmd:stdes} can be used with single- or multiple-record or single- or 
multiple-failure st data.


{title:Options}

{dlgtab:Main}

{phang}
{opt weight} specifies that the summary use weighted rather than unweighted 
statistics.  {opt weight} does nothing unless you specified a weight when you 
{cmd:stset} the data.  The {opt weight} option and the ability to ignore 
weights are unique to {cmd:stdes}.  The purpose of {cmd:stdes} is to describe 
the data in a computer sense{hline 2}the number of records, etc.{hline 2}and 
for that purpose, the weights are best ignored.

{phang}
{opt noshow} prevents {cmd:stdes} from showing the key st variables.  This 
option is seldom used since most people type {cmd:stset, show} or 
{cmd:stset, noshow} to set whether they want to see these variables mentioned 
at the top of the output of every st command; see {helpb stset}.


{title:Example}

    {cmd:. stdes}

    {cmd:. stdes if age>50}


{title:Also see}

{psee}
Manual:  {bf:[ST] stdes}

{psee}
Online:  {help st}, {helpb stset}, {helpb stsum}, {helpb stvary}{p_end}