Frequencies for first 10,000 rows of senbefor variable in namcs2004 dataset :

      have you/anyone in |
   practice seen patient |
                 before? |      Freq.     Percent        Cum.
-------------------------+-----------------------------------
Yes, established patient |      8,558       85.58       85.58
         No, new patient |      1,442       14.42      100.00
-------------------------+-----------------------------------
                   Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016