Frequencies for psi_14_postop_dehis_fstr variable in vwhqi_hosp_ahrq dataset :

PSI_14_POST |
 OP_DEHIS_F |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,879       59.61       59.61
          5 |      1,626       33.66       93.27
          j |        325        6.73      100.00
------------+-----------------------------------
      Total |      4,830      100.00

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