Frequencies for first 10,000 rows of prov3270 variable in pos1999 dataset : physician | extender - | contract | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,788 97.88 97.88 .01 | 28 0.28 98.16 .03 | 23 0.23 98.39 .04 | 4 0.04 98.43 .06 | 30 0.30 98.73 .07 | 9 0.09 98.82 .09 | 8 0.08 98.90 .11 | 24 0.24 99.14 .14 | 10 0.10 99.24 .17 | 1 0.01 99.25 .21 | 3 0.03 99.28 .23 | 12 0.12 99.40 .26 | 3 0.03 99.43 .29 | 12 0.12 99.55 .3 | 1 0.01 99.56 .34 | 1 0.01 99.57 .36 | 2 0.02 99.59 .43 | 1 0.01 99.60 .46 | 3 0.03 99.63 .57 | 8 0.08 99.71 .69 | 1 0.01 99.72 .71 | 3 0.03 99.75 .8 | 1 0.01 99.76 .86 | 2 0.02 99.78 .91 | 1 0.01 99.79 1.14 | 5 0.05 99.84 1.29 | 1 0.01 99.85 1.43 | 3 0.03 99.88 2.86 | 1 0.01 99.89 5.71 | 2 0.02 99.91 8 | 1 0.01 99.92 8.57 | 1 0.01 99.93 11.43 | 1 0.01 99.94 14.29 | 1 0.01 99.95 22.86 | 1 0.01 99.96 28.57 | 3 0.03 99.99 42.86 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016