Frequencies for a_c1_72 variable in prds_hosp10_yr2010 dataset :

    a_c1_72 |      Freq.     Percent        Cum.
------------+-----------------------------------
    -285633 |          1        0.04        0.04
      -1500 |          1        0.04        0.09
        153 |          1        0.04        0.13
      52145 |          1        0.04        0.17
      73683 |          1        0.04        0.22
     208775 |          1        0.04        0.26
          . |      2,317       99.74      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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