Frequencies for first 10,000 rows of arecvssi variable in sippp08putm1 dataset :

   REC: Authorized to receive SSI |
                  allocation flag |      Freq.     Percent        Cum.
----------------------------------+-----------------------------------
                      Not imputed |      9,991       99.91       99.91
Statistical imputation (hot deck) |          9        0.09      100.00
----------------------------------+-----------------------------------
                            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016