Frequencies for first 10,000 rows of prov2320 variable in pos1998 dataset :

      spec: |
 orthopedic |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,416       94.16       94.16
          N |        355        3.55       97.71
          Y |        229        2.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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