Frequencies for a_c1_4501 variable in prds_hosp10_yr2011 dataset :

  a_c1_4501 |      Freq.     Percent        Cum.
------------+-----------------------------------
    1829846 |          1        0.02        0.02
    2391699 |          1        0.02        0.03
   1.70e+07 |          1        0.02        0.05
   2.22e+07 |          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