Frequencies for first 10,000 rows of msr_cd variable in dbo_vwhqi_hosp_ed dataset :

    Measure |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
      ED_1b |      1,562       15.62       15.62
      ED_2b |      1,563       15.63       31.25
     OP_18b |      1,375       13.75       45.00
      OP_20 |      1,375       13.75       58.75
      OP_21 |      1,375       13.75       72.50
      OP_22 |      1,375       13.75       86.25
      OP_23 |      1,375       13.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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