Frequencies for psi_14_postop_dehis_f variable in vwhqi_hosp_ahrq dataset :

PSI_14_POST |
 OP_DEHIS_F |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,737       59.58       59.58
          5 |      1,519       33.06       92.64
          j |        338        7.36      100.00
------------+-----------------------------------
      Total |      4,594      100.00

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