Frequencies for first 10,000 rows of ilive variable in natlterr2012 dataset :

     Infant |
  Living at |
    Time of |
 Report RFP |
    571=? R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,163       11.63       11.63
          N |        117        1.17       12.80
          U |        277        2.77       15.57
          Y |      8,443       84.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016