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

EMP: Allocation flag for EHOWMANY |      Freq.     Percent        Cum.
----------------------------------+-----------------------------------
                      Not imputed |      9,711       97.11       97.11
Statistical imputation (hot deck) |        278        2.78       99.89
  Logical imputation (derivation) |         11        0.11      100.00
----------------------------------+-----------------------------------
                            Total |     10,000      100.00

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