Frequencies for first 10,000 rows of rnlpn variable in namcs2005 dataset :

rn/lpn seen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,955       69.55       69.55
          1 |      3,045       30.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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