Frequencies for a_c2_4501 variable in prds_hosp10_yr2010 dataset :

  a_c2_4501 |      Freq.     Percent        Cum.
------------+-----------------------------------
     609543 |          1        0.04        0.04
    7381484 |          1        0.04        0.09
    9889603 |          1        0.04        0.13
          . |      2,320       99.87      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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