Frequencies for e4_c3_24 variable in prds_hosp10_yr2010 dataset :

   e4_c3_24 |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      2,323      100.00      100.00
------------+-----------------------------------
      Total |      2,323      100.00

by Jean Roth , jroth@nber.org , 24 Aug 2018