Frequencies for msr_cd variable in hqi_national_comp dataset :

               Measure ID |      Freq.     Percent        Cum.
--------------------------+-----------------------------------
            COMP_HIP_KNEE |          1        9.09        9.09
PSI_12_POSTOP_PULMEMB_DVT |          1        9.09       18.18
       PSI_13_POST_SEPSIS |          1        9.09       27.27
      PSI_14_POSTOP_DEHIS |          1        9.09       36.36
           PSI_15_ACC_LAC |          1        9.09       45.45
              PSI_3_ULCER |          1        9.09       54.55
          PSI_4_SURG_COMP |          1        9.09       63.64
            PSI_6_IAT_PTX |          1        9.09       72.73
              PSI_7_CVCBI |          1        9.09       81.82
           PSI_8_POST_HIP |          1        9.09       90.91
            PSI_90_SAFETY |          1        9.09      100.00
--------------------------+-----------------------------------
                    Total |         11      100.00

by Jean Roth , jroth@nber.org , 15 Nov 2016