Frequencies for d_4_hos_c7_54 variable in hosp_rollup2552_96_1999 dataset :

d_4_hos_c7_ |
         54 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.03        0.03
          2 |          2        0.03        0.07
          3 |          1        0.02        0.08
          6 |          1        0.02        0.10
          9 |          1        0.02        0.11
         10 |          1        0.02        0.13
         18 |          1        0.02        0.15
         21 |          1        0.02        0.16
         22 |          1        0.02        0.18
         32 |          1        0.02        0.20
         37 |          2        0.03        0.23
         47 |          1        0.02        0.25
         55 |          1        0.02        0.26
         78 |          1        0.02        0.28
         89 |          1        0.02        0.30
        247 |          1        0.02        0.31
        453 |          1        0.02        0.33
        485 |          1        0.02        0.34
       2386 |          1        0.02        0.36
      15306 |          1        0.02        0.38
      18945 |          1        0.02        0.39
      19418 |          1        0.02        0.41
          . |      6,071       99.59      100.00
------------+-----------------------------------
      Total |      6,096      100.00

by Jean Roth , jroth@nber.org , 7 Sep 2018