Frequencies for a_c1_99 variable in prds_hosp10_yr2011 dataset :

    a_c1_99 |      Freq.     Percent        Cum.
------------+-----------------------------------
       1379 |          1        0.02        0.02
     479303 |          1        0.02        0.03
     625205 |          1        0.02        0.05
    1693563 |          1        0.02        0.07
    3829791 |          1        0.02        0.08
          . |      6,145       99.92      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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