Frequencies for e_b_irf_c1_39 variable in prds_hosp10_yr2012 dataset :

e_b_irf_c1_ |
         39 |      Freq.     Percent        Cum.
------------+-----------------------------------
         -5 |          1        0.02        0.02
         -1 |          1        0.02        0.03
          2 |          2        0.03        0.06
          9 |          1        0.02        0.08
         13 |          1        0.02        0.10
          . |      6,221       99.90      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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