Frequencies for first 10,000 rows of rnlpn variable in nhamcsopd2008 dataset :

rn/lpn seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      4,873       48.73       48.73
        yes |      5,127       51.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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