Frequencies for first 10,000 rows of prov3425 variable in pos1996 dataset :

       srv: |
dental-onsi |
te-resident |
          s |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,254       72.54       72.54
          N |        540        5.40       77.94
          Y |      2,206       22.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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