Frequencies for first 10,000 rows of prov2260 variable in pos1995 dataset :

      spec: |
obstetrics/ |
 gynecology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,552       95.52       95.52
          N |        276        2.76       98.28
          Y |        172        1.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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