Frequencies for first 10,000 rows of rnlpn variable in namcs2011 dataset :

RN/LPN seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      7,824       78.24       78.24
        Yes |      2,176       21.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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