Frequencies for first 10,000 rows of rnlpn variable in namcs2012 dataset :

 Registered |
  nurse/LPN |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,377       83.77       83.77
        Yes |      1,623       16.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016