Frequencies for d_4_irf_c11_90 variable in prds_hosp10_yr2012 dataset :

d_4_irf_c11 |
        _90 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          5        0.08        0.08
          2 |          4        0.06        0.14
          3 |          1        0.02        0.16
          7 |          1        0.02        0.18
         11 |          1        0.02        0.19
         31 |          1        0.02        0.21
         34 |          1        0.02        0.22
         64 |          1        0.02        0.24
         71 |          1        0.02        0.26
        107 |          1        0.02        0.27
        138 |          1        0.02        0.29
        173 |          1        0.02        0.31
        185 |          1        0.02        0.32
        191 |          1        0.02        0.34
          . |      6,206       99.66      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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