Frequencies for d_4_ipf_c11_90 variable in prds_hosp10_yr2010 dataset :

d_4_ipf_c11 |
        _90 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          7        0.30        0.30
          2 |          1        0.04        0.34
          3 |          1        0.04        0.39
          4 |          1        0.04        0.43
          7 |          1        0.04        0.47
         28 |          1        0.04        0.52
         38 |          1        0.04        0.56
        113 |          1        0.04        0.60
        136 |          1        0.04        0.65
       2904 |          1        0.04        0.69
      23319 |          1        0.04        0.73
          . |      2,306       99.27      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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