Frequencies for first 10,000 rows of ifyesfl variable in nhamcsopd1996 dataset :

    was `if |
       seen |
 before...` |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,288       92.88       92.88
          1 |        712        7.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016