Frequencies for first 10,000 rows of lpn variable in nhamcsopd2003 dataset :

   lpn seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,190       91.90       91.90
        yes |        810        8.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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