Frequencies for carotidendarterectomyper1000medi variable in 1997_surg_discharg

    Carotid |
Endarterect |
    omy per |
       1000 |
   Medicare |
  Enrollees |
       1997 |      Freq.     Percent        Cum.
------------+-----------------------------------
   1.187801 |          1        1.92        1.92
   1.647793 |          1        1.92        3.85
   1.663281 |          1        1.92        5.77
   1.985965 |          1        1.92        7.69
   2.080099 |          1        1.92        9.62
   2.101636 |          1        1.92       11.54
   2.475345 |          1        1.92       13.46
   2.508951 |          1        1.92       15.38
   2.522892 |          1        1.92       17.31
    2.54716 |          1        1.92       19.23
   2.666703 |          1        1.92       21.15
   2.675902 |          1        1.92       23.08
   2.748713 |          1        1.92       25.00
   2.788845 |          1        1.92       26.92
   2.815871 |          1        1.92       28.85
   2.820173 |          1        1.92       30.77
   2.866842 |          1        1.92       32.69
   2.916552 |          1        1.92       34.62
   3.010424 |          1        1.92       36.54
   3.011358 |          1        1.92       38.46
   3.037593 |          1        1.92       40.38
   3.059393 |          1        1.92       42.31
   3.083923 |          1        1.92       44.23
   3.086793 |          1        1.92       46.15
   3.114022 |          1        1.92       48.08
   3.149687 |          1        1.92       50.00
   3.188294 |          1        1.92       51.92
   3.403231 |          1        1.92       53.85
   3.440719 |          1        1.92       55.77
    3.47734 |          1        1.92       57.69
   3.505384 |          1        1.92       59.62
   3.513067 |          1        1.92       61.54
   3.551622 |          1        1.92       63.46
   3.568873 |          1        1.92       65.38
   3.579678 |          1        1.92       67.31
    3.61384 |          1        1.92       69.23
   3.649389 |          1        1.92       71.15
   3.740527 |          1        1.92       73.08
   3.773324 |          1        1.92       75.00
   3.812135 |          1        1.92       76.92
    3.93339 |          1        1.92       78.85
    3.99771 |          1        1.92       80.77
   4.028912 |          1        1.92       82.69
   4.049273 |          1        1.92       84.62
   4.124369 |          1        1.92       86.54
   4.136063 |          1        1.92       88.46
    4.33541 |          1        1.92       90.38
   4.362474 |          1        1.92       92.31
   4.370723 |          1        1.92       94.23
   4.493304 |          1        1.92       96.15
   4.667282 |          1        1.92       98.08
   4.981405 |          1        1.92      100.00
------------+-----------------------------------
      Total |         52      100.00

by Jean Roth , jroth@nber.org , 14 Mar 2018