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

  REC: Allocation flag for TSSILY |      Freq.     Percent        Cum.
----------------------------------+-----------------------------------
                      Not imputed |      9,976       99.76       99.76
Statistical imputation (hot deck) |          8        0.08       99.84
             Cold deck imputation |          1        0.01       99.85
  Logical imputation (derivation) |         15        0.15      100.00
----------------------------------+-----------------------------------
                            Total |     10,000      100.00

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