Frequencies for a_c2_99 variable in prds_hosp10_yr2012 dataset :

    a_c2_99 |      Freq.     Percent        Cum.
------------+-----------------------------------
         42 |          1        0.02        0.02
     143779 |          1        0.02        0.03
     539402 |          1        0.02        0.05
          . |      6,224       99.95      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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