.-
help for ^lfsum ^lfsummvl lfuni lftabl lfdes^                                   
.-

Descriptive command after search of fragments of variable names
-----------------------------------------------------------------

^lfsum    string_fragments_to_include, string_fragments_to_exclude^
^lfsummvl string_fragments_to_include, string_fragments_to_exclude^
^lfuni    string_fragments_to_include, string_fragments_to_exclude^
^lftabl   string_fragments_to_include, string_fragments_to_exclude^
^lfdes    string_fragments_to_include, string_fragments_to_exclude^


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

The ^lf^ series of programs are based on simple modifications of the
official Stata ^lookfor^ command. The purpose of this command
is to allow users to describe variously a subset of variables based 
on 1 or more characters in the variable name. This is useful when the 
variables of interest have certain characters in common but those 
characters do not begin the variable name. The ^lf^ series also 
allows strings to be excluded.

Options
-------

string_fragments_to_exclude


Examples
--------

. lfsum ara

Variable |     Obs        Mean   Std. Dev.       Min        Max
---------+-----------------------------------------------------
aramisyn |    6608    .6301453   .4828017          0          1  
carafate |     275           1          0          1          1  
caratime |     275    4.770909   1.914759          1          6  
carastop |      48     14251.6   106.0624      13932      14387  
st_caraf |     275    .7636364   .4256226          0          1  
caradose |   11571    17.28792   128.4147          0       1000  
carasdat |      57    14247.49   129.3099      13895      14410  
aravtime |    3339    3.831686   2.040146          0          6  
 arastop |     436     14327.7   56.11732      14083      14568  
   arava |    3339           1          0          1          1  
 starava |    3339    .7891584   .4079672          0          1  
aravdose |   14701    4.541868   8.378948          0         20  
 arasdat |    1675    14311.15   75.31641      14076      14561  

We are interested in all variables pertaining to the drug ^Arava.^
-lfsum ara- identifies all variables with the string "ara"
including variables we don't want.

. lfsum ara, cara aram

Variable |     Obs        Mean   Std. Dev.       Min        Max
---------+-----------------------------------------------------
aravtime |    3339    3.831686   2.040146          0          6  
 arastop |     436     14327.7   56.11732      14083      14568  
   arava |    3339           1          0          1          1  
 starava |    3339    .7891584   .4079672          0          1  
aravdose |   14701    4.541868   8.378948          0         20  
 arasdat |    1675    14311.15   75.31641      14076      14561  

-lfsum ara, cara aram- excludes all variables containing 
"cara" and "aram"

lfsummvl ara, cara aram
lfdes ara age sex

Authors
-------

Modified by Fred Wolfe from Stata's ^lookfor^

Also see
--------
Manual:  ^[R] lookfor^

On-line:  help for @lookfor@ @dellist@ @summarize@ @summvl@ @tabl@
          @univar@ @describe@
          
          



