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help for ^pwcorrs^                                         [STB-49 sg64.1]
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Correlations of variables
-------------------------                          
                                                       
 
     ^pwcorrs^ [varlist] [if exp] [in range] [weight] 
	[, ^o^bs ^sig^ ^p^rint(#) ^st^ar(#) ^b^onferroni ^sid^ak ^p^rint(#)
	   ^a^bove(#) ^v^ars(#) ^sor^t ^cwd^eletion ^sp^earman ^se^lect(list)]
                                        
                                                               
                                                     
                
Description                             
-----------         

^pwcorrs^ displays the Pearson or Spearman rank correlation matrix for 
varlist or, if ^vars^ was not specified, for all the variables in the dataset. 
The default calculation of individual correlation coefficients is made 
independently and thus the matrix contains the pairwise coefficients. 
Optionally, pairwise deletion can be requested. The sample n and
a test of independence are reported as an option. String variables are
omitted from the analytic processing. Duplicate variables specified in 
varlist are removed before processing. A specific subset of variables
can be selected for processing and displayed using the select option.    
         
                      
Options used with ^pwcorrs^                          
-------------------------                           

^spearman^ specifies Spearman correlations. The default is to perform
    Pearson correlations.
                                 
^obs^ adds a line to each row of the matrix reporting the number of 
    observations used in calculating the correlation coefficient. 
                                   
^sig^ adds a line to each row of the matrix reporting the significance level 
    of each correlation coefficient.               
                                                        
^print(#)^ specifies the significance level of correlation coefficients to be
    printed.  Coefficients with larger significance levels are left blank.  
    ^print(10)^ or ^print(.1)^ would list only coefficients significant at the
    10% level or better.      
                                                                
^star(#)^ specifies the significance level of coefficients to be starred.
    ^star(5)^ or ^star(.05)^ would star all coefficients significant at the 5%
    level or better.              
                                                         
^bonferroni^ makes the Bonferroni adjustment to calculated significance 
    levels. This affects printed significance levels and the ^print()^ and
    ^star()^ options.  "^pwcorr2, print(.05) bonferroni^" prints 
    coefficients with Bonferroni-adjusted significance levels of .05 or less.
                                             
^sidak^ makes the Sidak adjustment to calculated significance levels.  This
    affects printed significance levels and the ^print()^ and ^star()^ 
    options. "^pwcorr2, print(.05) sidak^" prints coefficients with Sidak-
    adjusted significance levels of .05 or less.             

^vars(#)^ specifies that on the first # variables on the varlist are to be 
    correlated with the the variables on the varlist. This produces # columns
    of correlations rather than a correlation matrix. From 1 to 6 vars may be
    specified.

^select(list)^ selects the number or letters of the alphabet to be included
    in the analyses. A range can be selected as well, e.g., (a f s-w _ 3).

^sort^ requests the varlist be reported in sorted order. If ^vars(#)^ is 
    specified the first ^vars(#)^ will not be sorted.

^above(#)^ specifies the minimum level of correlation coefficients to be
    printed.  Coefficients with smaller coefficients are left blank.
    above(.5) would list only coefficients of 0.5 or greater.

^cwdeletion^ removes observations with missing values for the varlist from
    the calculations.

                             
              
Examples                   
--------                    
                          
 . ^pwcorrs^                    
 . ^pwcorrs price weight mpg displ^   
 . ^pwcorrs price weight mpg displ, sig var(2) sort^
 . ^pwcorrs price weight mpg displ, sig obs var(2) above(0.5) sp cwd sort^
 . ^pwcorrs price weight mpg displ, sig obs^      
 . ^pwcorrs price weight mpg displ, sig bon se(a b s-t)^    
 . ^pwcorrs price weight mpg displ, star(.05)^      
 . ^pwcorrs price weight mpg displ, star(.05) bon^    
 . ^pwcorrs price weight mpg displ, print(.05) star(.01) bon^

 . ^pwcorrs ha com _all,v(2) sort sel(a f s-w _3) sp^          
                           Spearman Correlations                          
                    
            |       ha     comp 
  ----------+------------------
         ha |   1.0000           
       comp |   0.3848   1.0000    
        age |   0.4940   0.1602  
   am_stiff |   0.1675   0.1491
   anxindex |   0.0539  -0.0733 
   fatigsca |   0.0673   0.0345
   followup |   0.0622   0.1599
   severity |   0.1855  -0.0135
        sex |   0.0978   0.1652
   sleepsca |   0.0999   0.0032
   smokenow |  -0.0079  -0.0391
   smokepst |   0.0117  -0.0154 
    smokeve |   0.0204   0.0112
   specdate |  -0.0687   0.0183
    tjrhipl |   0.1161  -0.0021
    tjrhipr |  -0.0913  -0.0294
     tjrknl |   0.1900   0.0424
     tjrknr |   0.1902   0.1813
        wdi |   0.2440   0.1255
     weight |  -0.0919  -0.0369
   wpainsca |   0.0965  -0.0438

  .  

Also see                 
--------                  

    STB:  sg64.1 (STB-49), sg64 (STB-35)                        
 Manual:  [R] ^spearman^ ^correlate^ 
On-line:  help for @impute@, @pwcorr@, @spearman@, @correlate@,
         @summarize@, @vce@