Frequencies for legampblci variable in pchsa2012 dataset :

        Leg |
amputations |
  per 1,000 |
   Medicare |
  enrollees |
Black Lower |
 confidence |
      limit |      Freq.     Percent        Cum.
------------+-----------------------------------
       .902 |          1        0.03        0.03
       .941 |          1        0.03        0.06
       .946 |          1        0.03        0.09
      1.012 |          1        0.03        0.12
      1.096 |          1        0.03        0.15
      1.223 |          1        0.03        0.17
      1.241 |          1        0.03        0.20
      1.262 |          1        0.03        0.23
      1.307 |          1        0.03        0.26
      1.365 |          1        0.03        0.29
      1.368 |          1        0.03        0.32
      1.456 |          1        0.03        0.35
      1.481 |          1        0.03        0.38
      1.497 |          1        0.03        0.41
      1.522 |          1        0.03        0.44
      1.554 |          1        0.03        0.47
      1.566 |          1        0.03        0.49
      1.581 |          1        0.03        0.52
      1.613 |          1        0.03        0.55
      1.753 |          1        0.03        0.58
       1.79 |          1        0.03        0.61
      1.835 |          1        0.03        0.64
      2.644 |          1        0.03        0.67
      2.846 |          1        0.03        0.70
          . |      3,413       99.30      100.00
------------+-----------------------------------
      Total |      3,437      100.00

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