Frequencies for first 10,000 rows of senbefor variable in namcs2002 dataset :

      Have you/anyone in |
   practice seen patient |
                 before? |      Freq.     Percent        Cum.
-------------------------+-----------------------------------
                   Blank |        184        1.84        1.84
Yes, established patient |      8,306       83.06       84.90
         No, new patient |      1,510       15.10      100.00
-------------------------+-----------------------------------
                   Total |     10,000      100.00

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