Frequencies for d_4_hos_c2_90 variable in prds_hosp10_yr2010 dataset :

d_4_hos_c2_ |
         90 |      Freq.     Percent        Cum.
------------+-----------------------------------
        524 |          1        0.04        0.04
       2426 |          1        0.04        0.09
       3007 |          1        0.04        0.13
      10480 |          1        0.04        0.17
      14077 |          1        0.04        0.22
      19784 |          1        0.04        0.26
      24014 |          1        0.04        0.30
      28027 |          1        0.04        0.34
      29176 |          1        0.04        0.39
      30031 |          1        0.04        0.43
      30100 |          1        0.04        0.47
      34360 |          1        0.04        0.52
      41998 |          1        0.04        0.56
      59746 |          1        0.04        0.60
      77477 |          1        0.04        0.65
      80117 |          1        0.04        0.69
     126029 |          1        0.04        0.73
     197215 |          1        0.04        0.77
     254411 |          1        0.04        0.82
     269087 |          1        0.04        0.86
     418626 |          1        0.04        0.90
     682694 |          1        0.04        0.95
          . |      2,301       99.05      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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