Frequencies for b_1_c21_72 variable in prds_hosp10_yr2012 dataset :

 b_1_c21_72 |      Freq.     Percent        Cum.
------------+-----------------------------------
      30894 |          1        0.02        0.02
      46083 |          1        0.02        0.03
      63051 |          1        0.02        0.05
     596752 |          1        0.02        0.06
     774245 |          1        0.02        0.08
          . |      6,222       99.92      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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