Frequencies for d_4_ipf_c11_90 variable in prds_hosp10_yr2011 dataset :

d_4_ipf_c11 |
        _90 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          8        0.13        0.13
          2 |          1        0.02        0.15
          3 |          3        0.05        0.20
          4 |          1        0.02        0.21
          5 |          2        0.03        0.24
          7 |          1        0.02        0.26
         11 |          1        0.02        0.28
         14 |          1        0.02        0.29
         24 |          1        0.02        0.31
         36 |          1        0.02        0.33
         43 |          1        0.02        0.34
         44 |          1        0.02        0.36
         50 |          1        0.02        0.37
         68 |          1        0.02        0.39
         83 |          1        0.02        0.41
        143 |          1        0.02        0.42
        303 |          1        0.02        0.44
        350 |          1        0.02        0.46
        388 |          1        0.02        0.47
        584 |          1        0.02        0.49
        843 |          1        0.02        0.50
       1557 |          1        0.02        0.52
      23549 |          1        0.02        0.54
          . |      6,117       99.46      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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