Frequencies for first 10,000 rows of ilive variable in natl2011 dataset :

     Infant |
  Living at |
    Time of |
 Report RFP |
    571=? R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015