Frequencies for e_b_irf_c1_9 variable in prds_hosp10_yr2012 dataset :

e_b_irf_c1_ |
          9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         14        0.22        0.22
          2 |          7        0.11        0.34
          3 |          5        0.08        0.42
          4 |          6        0.10        0.51
          5 |          2        0.03        0.55
          6 |          3        0.05        0.59
          7 |          1        0.02        0.61
          8 |          3        0.05        0.66
          9 |          5        0.08        0.74
         10 |          1        0.02        0.75
         12 |          1        0.02        0.77
         13 |          2        0.03        0.80
         14 |          3        0.05        0.85
         18 |          1        0.02        0.87
         33 |          1        0.02        0.88
         36 |          1        0.02        0.90
         39 |          1        0.02        0.92
         42 |          1        0.02        0.93
         46 |          2        0.03        0.96
        122 |          1        0.02        0.98
        127 |          1        0.02        1.00
        144 |          1        0.02        1.01
        525 |          1        0.02        1.03
          . |      6,163       98.97      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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