Frequencies for d_4_ipf_c11_90 variable in prds_hosp10_yr2015 dataset :

d_4_ipf_c11 |
        _90 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         10        0.16        0.16
          2 |          3        0.05        0.21
          3 |          3        0.05        0.26
          4 |          2        0.03        0.29
          6 |          4        0.06        0.35
          8 |          1        0.02        0.37
         13 |          1        0.02        0.38
         14 |          1        0.02        0.40
         15 |          1        0.02        0.42
         19 |          1        0.02        0.43
         20 |          1        0.02        0.45
         21 |          1        0.02        0.46
         22 |          1        0.02        0.48
         68 |          1        0.02        0.50
         99 |          1        0.02        0.51
        102 |          1        0.02        0.53
        157 |          1        0.02        0.54
       1475 |          1        0.02        0.56
       8455 |          1        0.02        0.58
      17605 |          1        0.02        0.59
          . |      6,221       99.41      100.00
------------+-----------------------------------
      Total |      6,258      100.00

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