Frequencies for first 10,000 rows of prov3425 variable in pos1999 dataset :

       srv: |
dental-onsi |
te-resident |
          s |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,387       73.87       73.87
          N |        538        5.38       79.25
          Y |      2,075       20.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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