Frequencies for d_4_irf_c11_74 variable in prds_hosp10_yr2011 dataset :

d_4_irf_c11 |
        _74 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.03        0.03
          2 |          2        0.03        0.07
          9 |          1        0.02        0.08
         15 |          1        0.02        0.10
         17 |          1        0.02        0.11
         18 |          1        0.02        0.13
         25 |          1        0.02        0.15
         31 |          1        0.02        0.16
         33 |          1        0.02        0.18
         39 |          1        0.02        0.20
         56 |          1        0.02        0.21
         81 |          1        0.02        0.23
        134 |          1        0.02        0.24
        181 |          1        0.02        0.26
        197 |          1        0.02        0.28
        208 |          1        0.02        0.29
        214 |          1        0.02        0.31
        282 |          1        0.02        0.33
        355 |          1        0.02        0.34
        370 |          1        0.02        0.36
        458 |          1        0.02        0.37
        546 |          1        0.02        0.39
        548 |          1        0.02        0.41
        791 |          1        0.02        0.42
          . |      6,124       99.58      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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