Frequencies for d_4_hos_c4_90 variable in prds_hosp10_yr2015 dataset :

d_4_hos_c4_ |
         90 |      Freq.     Percent        Cum.
------------+-----------------------------------
      13654 |          1        0.02        0.02
      49051 |          1        0.02        0.03
     188395 |          1        0.02        0.05
     533754 |          1        0.02        0.06
    5226611 |          1        0.02        0.08
          . |      6,253       99.92      100.00
------------+-----------------------------------
      Total |      6,258      100.00

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