Frequencies for gi_asp_spec_bact_pneum_pres_ulc variable in hcccoefn dataset :

gi_asp_spec |
_bact_pneum |
  _pres_ulc |      Freq.     Percent        Cum.
------------+-----------------------------------
       .252 |          1      100.00      100.00
------------+-----------------------------------
      Total |          1      100.00

by Jean Roth , jroth@nber.org , 7 Feb 2019