Frequencies for msr_cd variable in vwhqi_hosp_ahrq_national dataset :

                        Measure Code |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
    PSI_12_POSTOP_PULMEMB_DVT_BETTER |          1        2.22        2.22
PSI_12_POSTOP_PULMEMB_DVT_NATIONAL_P |          1        2.22        4.44
      PSI_12_POSTOP_PULMEMB_DVT_SAME |          1        2.22        6.67
    PSI_12_POSTOP_PULMEMB_DVT_TOOFEW |          1        2.22        8.89
     PSI_12_POSTOP_PULMEMB_DVT_WORSE |          1        2.22       11.11
          PSI_14_POSTOP_DEHIS_BETTER |          2        4.44       15.56
      PSI_14_POSTOP_DEHIS_NATIONAL_P |          2        4.44       20.00
            PSI_14_POSTOP_DEHIS_SAME |          2        4.44       24.44
          PSI_14_POSTOP_DEHIS_TOOFEW |          2        4.44       28.89
           PSI_14_POSTOP_DEHIS_WORSE |          2        4.44       33.33
               PSI_15_ACC_LAC_BETTER |          2        4.44       37.78
           PSI_15_ACC_LAC_NATIONAL_P |          2        4.44       42.22
                 PSI_15_ACC_LAC_SAME |          2        4.44       46.67
               PSI_15_ACC_LAC_TOOFEW |          2        4.44       51.11
                PSI_15_ACC_LAC_WORSE |          2        4.44       55.56
              PSI_4_SURG_COMP_BETTER |          1        2.22       57.78
          PSI_4_SURG_COMP_NATIONAL_P |          1        2.22       60.00
                PSI_4_SURG_COMP_SAME |          1        2.22       62.22
              PSI_4_SURG_COMP_TOOFEW |          1        2.22       64.44
               PSI_4_SURG_COMP_WORSE |          1        2.22       66.67
                PSI_6_IAT_PTX_BETTER |          2        4.44       71.11
            PSI_6_IAT_PTX_NATIONAL_P |          2        4.44       75.56
                  PSI_6_IAT_PTX_SAME |          2        4.44       80.00
                PSI_6_IAT_PTX_TOOFEW |          2        4.44       84.44
                 PSI_6_IAT_PTX_WORSE |          2        4.44       88.89
                PSI_90_SAFETY_BETTER |          1        2.22       91.11
            PSI_90_SAFETY_NATIONAL_P |          1        2.22       93.33
                  PSI_90_SAFETY_SAME |          1        2.22       95.56
                PSI_90_SAFETY_TOOFEW |          1        2.22       97.78
                 PSI_90_SAFETY_WORSE |          1        2.22      100.00
-------------------------------------+-----------------------------------
                               Total |         45      100.00

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