Frequencies for msr_cd variable in vwhqi_hosp_hai_national dataset :

    Measure |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
  HAI_1_SIR |          1       25.00       25.00
  HAI_2_SIR |          1       25.00       50.00
  HAI_3_SIR |          1       25.00       75.00
  HAI_4_SIR |          1       25.00      100.00
------------+-----------------------------------
      Total |          4      100.00

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