Frequencies for first 10,000 rows of prov3280 variable in pos2008 dataset :

       srv: |
physician-o |
  nsite-non |
   resident |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,661       76.61       76.61
          N |      2,275       22.75       99.36
          Y |         64        0.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016