Frequencies for a_c1_111 variable in prds_hosp10_yr2010 dataset :

   a_c1_111 |      Freq.     Percent        Cum.
------------+-----------------------------------
      21972 |          1        0.04        0.04
      30101 |          1        0.04        0.09
      66418 |          1        0.04        0.13
     303812 |          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