Frequencies for first 10,000 rows of senbefor variable in namcs2005 dataset :

      have you/anyone in |
   practice seen patient |
                 before? |      Freq.     Percent        Cum.
-------------------------+-----------------------------------
Yes, established patient |      9,036       90.36       90.36
         No, new patient |        964        9.64      100.00
-------------------------+-----------------------------------
                   Total |     10,000      100.00

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