Frequencies for first 10,000 rows of urgentfl variable in nhamcsed1999 dataset :

        was |
  immediacy |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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