Frequencies for first 10,000 rows of prov2260 variable in pos2007 dataset :

      spec: |
obstetrics/ |
 gynecology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,666       96.66       96.66
          N |        212        2.12       98.78
          Y |        122        1.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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