Frequencies for psi_14_postop_dehis_f variable in vwhqi_hosp_ahrq dataset :

PSI_14_POST |
 OP_DEHIS_F |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,693       59.61       59.61
          5 |      1,449       32.07       91.68
          j |        376        8.32      100.00
------------+-----------------------------------
      Total |      4,518      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016