Frequencies for backsurgeryper1000medicareenroll variable in 2009_surg_discharg

       Back |
Surgery per |
       1000 |
   Medicare |
  Enrollees |
       2009 |      Freq.     Percent        Cum.
------------+-----------------------------------
       1.44 |          1        1.92        1.92
       2.49 |          1        1.92        3.85
       2.62 |          1        1.92        5.77
       2.67 |          1        1.92        7.69
       3.15 |          1        1.92        9.62
       3.24 |          1        1.92       11.54
       3.58 |          1        1.92       13.46
        3.7 |          1        1.92       15.38
       3.75 |          1        1.92       17.31
        3.8 |          1        1.92       19.23
       3.97 |          1        1.92       21.15
       3.99 |          1        1.92       23.08
       4.01 |          1        1.92       25.00
       4.05 |          1        1.92       26.92
       4.25 |          1        1.92       28.85
       4.26 |          1        1.92       30.77
        4.3 |          1        1.92       32.69
       4.38 |          1        1.92       34.62
        4.4 |          1        1.92       36.54
       4.58 |          1        1.92       38.46
       4.62 |          1        1.92       40.38
       4.74 |          2        3.85       44.23
       4.75 |          1        1.92       46.15
       4.91 |          1        1.92       48.08
       4.99 |          1        1.92       50.00
          5 |          1        1.92       51.92
       5.04 |          1        1.92       53.85
       5.07 |          2        3.85       57.69
       5.08 |          1        1.92       59.62
       5.21 |          1        1.92       61.54
       5.29 |          1        1.92       63.46
       5.31 |          1        1.92       65.38
       5.35 |          1        1.92       67.31
       5.43 |          2        3.85       71.15
       5.57 |          1        1.92       73.08
       5.59 |          1        1.92       75.00
       5.77 |          1        1.92       76.92
       5.81 |          1        1.92       78.85
       5.83 |          1        1.92       80.77
        5.9 |          1        1.92       82.69
       5.91 |          1        1.92       84.62
       6.01 |          1        1.92       86.54
       6.12 |          1        1.92       88.46
       6.14 |          1        1.92       90.38
       6.17 |          1        1.92       92.31
       6.78 |          1        1.92       94.23
       6.91 |          1        1.92       96.15
       7.47 |          1        1.92       98.08
       9.92 |          1        1.92      100.00
------------+-----------------------------------
      Total |         52      100.00

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