Frequencies for legampbuci variable in pccounty2012 dataset :

        Leg |
amputations |
  per 1,000 |
   Medicare |
  enrollees |
Black Upper |
 confidence |
      limit |      Freq.     Percent        Cum.
------------+-----------------------------------
       1.54 |          1        0.03        0.03
      2.034 |          1        0.03        0.06
      2.138 |          1        0.03        0.10
      2.139 |          1        0.03        0.13
      2.162 |          1        0.03        0.16
      2.184 |          1        0.03        0.19
      2.237 |          1        0.03        0.22
      2.297 |          1        0.03        0.25
       2.32 |          1        0.03        0.29
      2.395 |          1        0.03        0.32
      2.431 |          1        0.03        0.35
      2.464 |          1        0.03        0.38
      2.489 |          1        0.03        0.41
      2.506 |          1        0.03        0.45
      2.509 |          1        0.03        0.48
       2.51 |          1        0.03        0.51
       2.58 |          1        0.03        0.54
      2.675 |          1        0.03        0.57
      2.729 |          1        0.03        0.60
      2.743 |          1        0.03        0.64
      3.108 |          1        0.03        0.67
      3.146 |          1        0.03        0.70
      3.666 |          1        0.03        0.73
       4.14 |          1        0.03        0.76
          . |      3,117       99.24      100.00
------------+-----------------------------------
      Total |      3,141      100.00

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