1                                        The SAS System            09:54 Friday, October 27, 2006

NOTE: Copyright (c) 2002-2003 by SAS Institute Inc., Cary, NC, USA. 
NOTE: SAS (r) 9.1 (TS1M3)
      Licensed to UNC-CHAPEL HILL-SYSTEMWIDE-T/R, Site 0039466002.
NOTE: This session is executing on the XP_PRO  platform.



NOTE: SAS 9.1.3 Service Pack 3

NOTE: SAS initialization used:
      real time           0.47 seconds
      cpu time            0.14 seconds
      

NOTE: AUTOEXEC processing beginning; file is c:\local\sas91\autoexec.sas.


NOTE: AUTOEXEC processing completed.

1          * example2.sas
2          * xref:
3          * input:
4          * output:
5          * does: - example usage of the VCBD macro
6          ******************************************************************;;
7          filename MAC "vcbd.sas";
8          %include MAC;
145        ******************************************************************;;
146        data A;
147            input practice provider response;
148         cards;

NOTE: The data set WORK.A has 36 observations and 3 variables.
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds
      

185           ;
186           run;
187        ******************************************************************;;
188        
189        proc summary data=A nway;
190          class practice provider;
191          var  response;
192          output out=B sum=y n=m;
193          run;

NOTE: There were 36 observations read from the data set WORK.A.
NOTE: The data set WORK.B has 12 observations and 6 variables.
NOTE: PROCEDURE SUMMARY used (Total process time):
      real time           0.00 seconds
      cpu time            0.01 seconds
      

194        ******************************************************************;;
195        proc print data=B;      * take a look;
196          var practice    provider   y m;
197          run;

NOTE: There were 12 observations read from the data set WORK.B.
NOTE: The PROCEDURE PRINT printed page 1.
NOTE: PROCEDURE PRINT used (Total process time):
2 The SAS System                                                 09:54 Friday, October 27, 2006

      real time           0.01 seconds
      cpu time            0.02 seconds
      

198        ******************************************************************;;
199        %vcbd (data = B, i = practice, mij = m, yij = y);

NOTE: There were 12 observations read from the data set WORK.B.
NOTE: The data set WORK._A_ has 12 observations and 5 variables.
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds
      


NOTE: There were 12 observations read from the data set WORK._A_.
NOTE: The data set WORK._B_ has 5 observations and 8 variables.
NOTE: PROCEDURE SUMMARY used (Total process time):
      real time           0.00 seconds
      cpu time            0.01 seconds
      


NOTE: There were 5 observations read from the data set WORK._B_.
NOTE: The data set WORK._C_ has 5 observations and 11 variables.
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      cpu time            0.01 seconds
      


NOTE: There were 5 observations read from the data set WORK._C_.
NOTE: The data set WORK._D_ has 1 observations and 11 variables.
NOTE: PROCEDURE SUMMARY used (Total process time):
      real time           0.00 seconds
      cpu time            0.00 seconds
      


Variance Components for Nested Binary Responses (Version 1.0)
(c) Bahjat Qaqish and Habib Moalem (1993)
Department of Biostatistics
CB 7400
Chapel Hill,  NC 27599-7420

Data set: B
Response: y / m
Practice ID: practice

Total number of practices:  5
Total number of physicians: 12
Total number of patients:   36
Sum of y:  22
Mean of y: 0.6111111111

Estimates:
    Theta:    0.6111111111
    Lambda_1: 0.3108445033
    Lambda_2: 0.0528424377

Variance components:
    Between practices:                 31.084450329 %
    Between providers within practice: 3.6416656409 %
3 The SAS System                                                 09:54 Friday, October 27, 2006

    Between patients Within provider:  65.27388403 %

Correlation:
    Between providers within practice: 0.3108445033
    Between patients within provider:  0.3472611597

Odds ratio:
    Between providers within practice: 3.7539942441
    Between patients within provider:  4.4295061438


Macro VCBD done.
NOTE: There were 1 observations read from the data set WORK._D_.
NOTE: The data set WORK._E_ has 1 observations and 31 variables.
NOTE: DATA statement used (Total process time):
      real time           0.00 seconds
      cpu time            0.01 seconds
      


NOTE: SAS Institute Inc., SAS Campus Drive, Cary, NC USA 27513-2414
NOTE: The SAS System used:
      real time           0.68 seconds
      cpu time            0.22 seconds
      
                                                             09:54 Friday, October 27, 2006   1

Obs    practice    provider    y    m

  1        1           1       1    4
  2        1           2       0    4
  3        2           1       3    4
  4        3           3       2    3
  5        3           4       3    3
  6        3           7       1    4
  7        4           4       4    4
  8        4           8       3    3
  9        5           1       2    3
 10        5           2       1    1
 11        5           3       1    2
 12        5           4       1    1