Frequencies for legampblci variable in pccounty2013 dataset :

        Leg |
amputations |
  per 1,000 |
   Medicare |
  enrollees |
Black Lower |
 confidence |
      limit |      Freq.     Percent        Cum.
------------+-----------------------------------
     -1.949 |          1        0.03        0.03
     -1.832 |          1        0.03        0.06
     -1.823 |          1        0.03        0.10
      -1.82 |          1        0.03        0.13
     -1.739 |          1        0.03        0.16
     -1.713 |          1        0.03        0.19
     -1.552 |          1        0.03        0.22
     -1.525 |          1        0.03        0.25
      -1.44 |          1        0.03        0.29
     -1.427 |          1        0.03        0.32
      -1.28 |          1        0.03        0.35
     -1.176 |          1        0.03        0.38
     -1.169 |          1        0.03        0.41
     -1.144 |          1        0.03        0.45
     -1.128 |          1        0.03        0.48
     -1.081 |          1        0.03        0.51
     -1.072 |          1        0.03        0.54
     -1.064 |          1        0.03        0.57
     -1.036 |          1        0.03        0.60
     -1.031 |          1        0.03        0.64
     -1.018 |          1        0.03        0.67
      -1.01 |          1        0.03        0.70
      -.973 |          1        0.03        0.73
      -.935 |          1        0.03        0.76
      -.934 |          1        0.03        0.80
      -.894 |          1        0.03        0.83
       -.85 |          1        0.03        0.86
      -.847 |          1        0.03        0.89
      -.818 |          1        0.03        0.92
        -.8 |          1        0.03        0.96
      -.777 |          1        0.03        0.99
      -.772 |          1        0.03        1.02
      -.724 |          1        0.03        1.05
       .627 |          1        0.03        1.08
       .679 |          1        0.03        1.11
       .764 |          1        0.03        1.15
       .769 |          1        0.03        1.18
       .895 |          1        0.03        1.21
       .903 |          1        0.03        1.24
       .962 |          1        0.03        1.27
       .968 |          1        0.03        1.31
        .99 |          1        0.03        1.34
       1.03 |          1        0.03        1.37
      1.033 |          1        0.03        1.40
      1.098 |          1        0.03        1.43
      1.175 |          1        0.03        1.46
      1.186 |          1        0.03        1.50
      1.385 |          1        0.03        1.53
      1.403 |          1        0.03        1.56
      1.486 |          1        0.03        1.59
      1.577 |          1        0.03        1.62
      1.668 |          1        0.03        1.66
      1.691 |          1        0.03        1.69
      1.693 |          1        0.03        1.72
      1.852 |          1        0.03        1.75
      2.269 |          1        0.03        1.78
          . |      3,085       98.22      100.00
------------+-----------------------------------
      Total |      3,141      100.00

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