Frequencies for first 10,000 rows of urgentfl variable in nhamcsed1993 dataset :

was urgency |
   of visit |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,631       96.31       96.31
          1 |        369        3.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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