Frequencies for d_4_ipf_c11_90 variable in prds_hosp10_yr2012 dataset :

d_4_ipf_c11 |
        _90 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          7        0.11        0.11
          2 |          3        0.05        0.16
          3 |          2        0.03        0.19
          4 |          4        0.06        0.26
          5 |          1        0.02        0.27
          9 |          1        0.02        0.29
         13 |          1        0.02        0.31
         15 |          2        0.03        0.34
         22 |          1        0.02        0.35
         29 |          1        0.02        0.37
         35 |          1        0.02        0.39
         46 |          1        0.02        0.40
         68 |          1        0.02        0.42
         79 |          1        0.02        0.43
        109 |          1        0.02        0.45
        128 |          1        0.02        0.47
        214 |          1        0.02        0.48
        387 |          1        0.02        0.50
        815 |          1        0.02        0.51
        980 |          1        0.02        0.53
      19788 |          1        0.02        0.55
          . |      6,193       99.45      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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