Frequencies for legampbuci variable in pccounty2011 dataset :

        Leg |
amputations |
  per 1,000 |
   Medicare |
  enrollees |
Black Upper |
 confidence |
      limit |      Freq.     Percent        Cum.
------------+-----------------------------------
      1.854 |          1        0.03        0.03
      2.006 |          1        0.03        0.06
       2.07 |          1        0.03        0.10
      2.075 |          1        0.03        0.13
      2.083 |          1        0.03        0.16
      2.089 |          1        0.03        0.19
      2.099 |          1        0.03        0.22
      2.141 |          1        0.03        0.25
      2.206 |          1        0.03        0.29
      2.364 |          1        0.03        0.32
      2.452 |          1        0.03        0.35
      2.475 |          1        0.03        0.38
      2.526 |          1        0.03        0.41
        2.6 |          1        0.03        0.45
      2.612 |          1        0.03        0.48
      2.674 |          1        0.03        0.51
      2.895 |          1        0.03        0.54
      2.906 |          1        0.03        0.57
      2.949 |          1        0.03        0.60
      2.953 |          1        0.03        0.64
      2.975 |          1        0.03        0.67
      2.979 |          1        0.03        0.70
       3.05 |          1        0.03        0.73
      3.052 |          1        0.03        0.76
      3.076 |          1        0.03        0.80
      3.097 |          1        0.03        0.83
      3.334 |          1        0.03        0.86
      3.409 |          1        0.03        0.89
       3.83 |          1        0.03        0.92
      4.009 |          1        0.03        0.96
          . |      3,111       99.04      100.00
------------+-----------------------------------
      Total |      3,141      100.00

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