Frequencies for first 10,000 rows of speccat variable in namcs2015 dataset :

    Type of |
  specialty |
  (Primary, |
   Medical, |
  Surgical) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,223       32.23       32.23
          2 |      4,055       40.55       72.78
          3 |      2,722       27.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017