Frequencies for s2_1_c2_1809 variable in prds_hosp10_yr2015 dataset :

s2_1_c2_180 |
          9 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,256       99.97       99.97
     243536 |          1        0.02       99.98
     493516 |          1        0.02      100.00
------------+-----------------------------------
      Total |      6,258      100.00

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