Frequencies for b_1_c21_109 variable in prds_hosp10_yr2010 dataset :

b_1_c21_109 |      Freq.     Percent        Cum.
------------+-----------------------------------
        353 |          1        0.04        0.04
      12580 |          1        0.04        0.09
      28278 |          1        0.04        0.13
      36820 |          1        0.04        0.17
          . |      2,319       99.83      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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