Frequencies for legampwrat variable in pccounty2013 dataset : Leg | amputations | per 1,000 | Medicare | enrollees | White Rate | Freq. Percent Cum. ------------+----------------------------------- -1.48 | 1 0.03 0.03 -1.122 | 1 0.03 0.06 -1.057 | 1 0.03 0.10 -1.005 | 1 0.03 0.13 -.91 | 1 0.03 0.16 -.863 | 1 0.03 0.19 -.859 | 1 0.03 0.22 -.843 | 1 0.03 0.25 -.811 | 1 0.03 0.29 -.766 | 1 0.03 0.32 -.677 | 1 0.03 0.35 -.655 | 1 0.03 0.38 -.646 | 1 0.03 0.41 -.607 | 1 0.03 0.45 -.525 | 1 0.03 0.48 -.506 | 1 0.03 0.51 -.488 | 1 0.03 0.54 -.448 | 1 0.03 0.57 -.422 | 1 0.03 0.60 -.381 | 1 0.03 0.64 -.33 | 1 0.03 0.67 .224 | 1 0.03 0.70 .247 | 1 0.03 0.73 .279 | 1 0.03 0.76 .337 | 1 0.03 0.80 .352 | 1 0.03 0.83 .377 | 1 0.03 0.86 .379 | 1 0.03 0.89 .384 | 1 0.03 0.92 .396 | 1 0.03 0.96 .398 | 1 0.03 0.99 .419 | 1 0.03 1.02 .42 | 1 0.03 1.05 .423 | 1 0.03 1.08 .433 | 1 0.03 1.11 .437 | 1 0.03 1.15 .44 | 2 0.06 1.21 .445 | 1 0.03 1.24 .454 | 1 0.03 1.27 .473 | 1 0.03 1.31 .474 | 1 0.03 1.34 .497 | 1 0.03 1.37 .499 | 1 0.03 1.40 .502 | 2 0.06 1.46 .503 | 1 0.03 1.50 .512 | 1 0.03 1.53 .516 | 1 0.03 1.56 .533 | 1 0.03 1.59 .545 | 1 0.03 1.62 .554 | 1 0.03 1.66 .556 | 1 0.03 1.69 .566 | 1 0.03 1.72 .587 | 1 0.03 1.75 .741 | 1 0.03 1.78 .742 | 1 0.03 1.81 . | 3,084 98.19 100.00 ------------+----------------------------------- Total | 3,141 100.00 by Jean Roth , jroth@nber.org , 14 Mar 2018