Frequencies for first 10,000 rows of lpn variable in nhamcsed2002 dataset :

        lpn |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,489       94.89       94.89
          1 |        511        5.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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