Frequencies for a_c2_9930 variable in prds_hosp10_yr2011 dataset :

  a_c2_9930 |      Freq.     Percent        Cum.
------------+-----------------------------------
     330574 |          1        0.02        0.02
          . |      6,149       99.98      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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