Frequencies for d_4_hos_c2_55 variable in hosp_rollup2552_96_2007 dataset :

d_4_hos_c2_ |
         55 |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          1        0.02        0.02
          6 |          1        0.02        0.03
         47 |          1        0.02        0.05
        168 |          1        0.02        0.06
        659 |          1        0.02        0.08
       1296 |          1        0.02        0.10
       1494 |          1        0.02        0.11
       1684 |          1        0.02        0.13
       1868 |          1        0.02        0.14
       3096 |          1        0.02        0.16
       3533 |          1        0.02        0.18
       4306 |          1        0.02        0.19
       8275 |          1        0.02        0.21
      25104 |          1        0.02        0.22
      27603 |          1        0.02        0.24
      38580 |          1        0.02        0.26
      61351 |          1        0.02        0.27
      82939 |          1        0.02        0.29
     536695 |          1        0.02        0.30
     688685 |          1        0.02        0.32
     787710 |          1        0.02        0.34
          . |      6,213       99.66      100.00
------------+-----------------------------------
      Total |      6,234      100.00

by Jean Roth , jroth@nber.org , 21 Apr 2018