Frequencies for e_b_irf_c1_31 variable in prds_hosp10_yr2010 dataset :

e_b_irf_c1_ |
         31 |      Freq.     Percent        Cum.
------------+-----------------------------------
         62 |          1        0.04        0.04
       1019 |          1        0.04        0.09
          . |      2,321       99.91      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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