Frequencies for first 10,000 rows of crdc_cthrtztn_prcdr_rooms_cnt variable in 

    Cardiac |
Catheteriza |
       tion |
  Procedure |
 Room Count |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,373       13.73       13.73
          1 |         61        0.61       14.34
          2 |         31        0.31       14.65
          3 |         19        0.19       14.84
          4 |         10        0.10       14.94
          5 |          6        0.06       15.00
          6 |          5        0.05       15.05
          7 |          3        0.03       15.08
          8 |          1        0.01       15.09
          . |      8,491       84.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016