Frequencies for first 10,000 rows of prov2260 variable in pos2003 dataset :

      spec: |
obstetrics/ |
 gynecology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,140       91.40       91.40
          N |        573        5.73       97.13
          Y |        287        2.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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