Frequencies for e3_4_hos_c1_20 variable in prds_hosp10_yr2013 dataset :

e3_4_hos_c1 |
        _20 |      Freq.     Percent        Cum.
------------+-----------------------------------
    -671155 |          1        0.02        0.02
    -649658 |          1        0.02        0.03
     570621 |          1        0.02        0.05
     753925 |          1        0.02        0.06
          . |      6,244       99.94      100.00
------------+-----------------------------------
      Total |      6,248      100.00

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