Frequencies for b_1_c21_109 variable in prds_hosp10_yr2015 dataset :

b_1_c21_109 |      Freq.     Percent        Cum.
------------+-----------------------------------
        391 |          1        0.02        0.02
       1951 |          1        0.02        0.03
       3683 |          1        0.02        0.05
      15663 |          1        0.02        0.06
     108314 |          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