Frequencies for first 10,000 rows of lpn variable in nhamcsed2001 dataset :

        lpn |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,519       95.19       95.19
          1 |        481        4.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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