Frequencies for measureid variable in hqi_national_readmdeath dataset :

        Measure ID |      Freq.     Percent        Cum.
-------------------+-----------------------------------
       MORT_30_AMI |          1        7.14        7.14
      MORT_30_CABG |          1        7.14       14.29
      MORT_30_COPD |          1        7.14       21.43
        MORT_30_HF |          1        7.14       28.57
        MORT_30_PN |          1        7.14       35.71
       MORT_30_STK |          1        7.14       42.86
      READM_30_AMI |          1        7.14       50.00
     READM_30_CABG |          1        7.14       57.14
     READM_30_COPD |          1        7.14       64.29
       READM_30_HF |          1        7.14       71.43
 READM_30_HIP_KNEE |          1        7.14       78.57
READM_30_HOSP_WIDE |          1        7.14       85.71
       READM_30_PN |          1        7.14       92.86
      READM_30_STK |          1        7.14      100.00
-------------------+-----------------------------------
             Total |         14      100.00

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