Frequencies for first 10,000 rows of rnlpn variable in nhamcsopd2009 dataset :

rn/lpn seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      5,335       53.35       53.35
        yes |      4,665       46.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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