Frequencies for d_4_irf_c11_74 variable in prds_hosp10_yr2012 dataset :

d_4_irf_c11 |
        _74 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.03        0.03
          2 |          2        0.03        0.06
          4 |          1        0.02        0.08
          5 |          2        0.03        0.11
          7 |          2        0.03        0.14
          8 |          1        0.02        0.16
          9 |          1        0.02        0.18
         22 |          1        0.02        0.19
         32 |          1        0.02        0.21
         34 |          1        0.02        0.22
         59 |          1        0.02        0.24
         77 |          1        0.02        0.26
        151 |          1        0.02        0.27
        174 |          1        0.02        0.29
        183 |          1        0.02        0.31
        335 |          1        0.02        0.32
        600 |          1        0.02        0.34
        693 |          1        0.02        0.35
        861 |          1        0.02        0.37
        913 |          1        0.02        0.39
       1176 |          1        0.02        0.40
       3207 |          1        0.02        0.42
          . |      6,201       99.58      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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