Frequencies for msr_cd variable in vwhqi_hosp_ahrq_national dataset :

                        Measure Code |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
    PSI_12_POSTOP_PULMEMB_DVT_BETTER |          1        3.33        3.33
PSI_12_POSTOP_PULMEMB_DVT_NATIONAL_P |          1        3.33        6.67
      PSI_12_POSTOP_PULMEMB_DVT_SAME |          1        3.33       10.00
    PSI_12_POSTOP_PULMEMB_DVT_TOOFEW |          1        3.33       13.33
     PSI_12_POSTOP_PULMEMB_DVT_WORSE |          1        3.33       16.67
          PSI_14_POSTOP_DEHIS_BETTER |          1        3.33       20.00
      PSI_14_POSTOP_DEHIS_NATIONAL_P |          1        3.33       23.33
            PSI_14_POSTOP_DEHIS_SAME |          1        3.33       26.67
          PSI_14_POSTOP_DEHIS_TOOFEW |          1        3.33       30.00
           PSI_14_POSTOP_DEHIS_WORSE |          1        3.33       33.33
               PSI_15_ACC_LAC_BETTER |          1        3.33       36.67
           PSI_15_ACC_LAC_NATIONAL_P |          1        3.33       40.00
                 PSI_15_ACC_LAC_SAME |          1        3.33       43.33
               PSI_15_ACC_LAC_TOOFEW |          1        3.33       46.67
                PSI_15_ACC_LAC_WORSE |          1        3.33       50.00
              PSI_4_SURG_COMP_BETTER |          1        3.33       53.33
          PSI_4_SURG_COMP_NATIONAL_P |          1        3.33       56.67
                PSI_4_SURG_COMP_SAME |          1        3.33       60.00
              PSI_4_SURG_COMP_TOOFEW |          1        3.33       63.33
               PSI_4_SURG_COMP_WORSE |          1        3.33       66.67
                PSI_6_IAT_PTX_BETTER |          1        3.33       70.00
            PSI_6_IAT_PTX_NATIONAL_P |          1        3.33       73.33
                  PSI_6_IAT_PTX_SAME |          1        3.33       76.67
                PSI_6_IAT_PTX_TOOFEW |          1        3.33       80.00
                 PSI_6_IAT_PTX_WORSE |          1        3.33       83.33
                PSI_90_SAFETY_BETTER |          1        3.33       86.67
            PSI_90_SAFETY_NATIONAL_P |          1        3.33       90.00
                  PSI_90_SAFETY_SAME |          1        3.33       93.33
                PSI_90_SAFETY_TOOFEW |          1        3.33       96.67
                 PSI_90_SAFETY_WORSE |          1        3.33      100.00
-------------------------------------+-----------------------------------
                               Total |         30      100.00

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