Frequencies for a7_1_c3_7 variable in prds_hosp10_yr2012 dataset :

  a7_1_c3_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
    -571046 |          1        0.02        0.02
    -221000 |          1        0.02        0.03
       8517 |          1        0.02        0.05
     231074 |          1        0.02        0.06
     349283 |          1        0.02        0.08
    3355962 |          1        0.02        0.10
          . |      6,221       99.90      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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