Frequencies for first 10,000 rows of occp_cod variable in demo2006q2 dataset :

Abbreviatio |
  n for the |
 reporter's |
    type of |
 occupation |
     in the |
     latest |
 version of |
       a ca |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,250       12.50       12.50
         CN |      1,320       13.20       25.70
         LW |      1,846       18.46       44.16
         MD |      3,745       37.45       81.61
         OT |      1,252       12.52       94.13
         PH |        587        5.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015