Frequencies for a_c2_4501 variable in prds_hosp10_yr2013 dataset :

  a_c2_4501 |      Freq.     Percent        Cum.
------------+-----------------------------------
      89458 |          1        0.02        0.02
     455499 |          1        0.02        0.03
    6374822 |          1        0.02        0.05
          . |      6,245       99.95      100.00
------------+-----------------------------------
      Total |      6,248      100.00

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