Frequencies for first 10,000 rows of timemdfl variable in namcs2007 dataset :

 time spent |
       with |
  physician |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
not imputed |      7,496       74.96       74.96
    imputed |      2,504       25.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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