Frequencies for a_c1_111 variable in prds_hosp10_yr2011 dataset :

   a_c1_111 |      Freq.     Percent        Cum.
------------+-----------------------------------
       7044 |          1        0.02        0.02
      47231 |          1        0.02        0.03
      53108 |          1        0.02        0.05
     286007 |          1        0.02        0.07
          . |      6,146       99.93      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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