Frequencies for d_4_ipf_c11_90 variable in prds_hosp10_yr2013 dataset :

d_4_ipf_c11 |
        _90 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          6        0.10        0.10
          2 |          2        0.03        0.13
          3 |          3        0.05        0.18
          4 |          2        0.03        0.21
          6 |          2        0.03        0.24
          8 |          2        0.03        0.27
         10 |          2        0.03        0.30
         12 |          2        0.03        0.34
         18 |          1        0.02        0.35
         19 |          1        0.02        0.37
         22 |          1        0.02        0.38
         36 |          1        0.02        0.40
         38 |          1        0.02        0.42
         95 |          1        0.02        0.43
        143 |          1        0.02        0.45
        175 |          1        0.02        0.46
        340 |          1        0.02        0.48
       1107 |          1        0.02        0.50
      25442 |          1        0.02        0.51
          . |      6,216       99.49      100.00
------------+-----------------------------------
      Total |      6,248      100.00

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