Frequencies for first 10,000 rows of amb22d variable in namcs2002 dataset : Surgical | procedure | #2 - 2 | digit | Freq. Percent Cum. ------------+----------------------------------- 00 | 9,846 98.46 98.46 03 | 1 0.01 98.47 04 | 1 0.01 98.48 06 | 1 0.01 98.49 08 | 2 0.02 98.51 13 | 11 0.11 98.62 14 | 2 0.02 98.64 16 | 1 0.01 98.65 18 | 3 0.03 98.68 19 | 1 0.01 98.69 20 | 1 0.01 98.70 21 | 15 0.15 98.85 22 | 3 0.03 98.88 27 | 3 0.03 98.91 28 | 3 0.03 98.94 29 | 2 0.02 98.96 32 | 2 0.02 98.98 36 | 1 0.01 98.99 39 | 2 0.02 99.01 45 | 3 0.03 99.04 46 | 2 0.02 99.06 48 | 1 0.01 99.07 49 | 2 0.02 99.09 50 | 1 0.01 99.10 56 | 1 0.01 99.11 59 | 1 0.01 99.12 60 | 2 0.02 99.14 70 | 2 0.02 99.16 77 | 2 0.02 99.18 80 | 4 0.04 99.22 81 | 3 0.03 99.25 82 | 1 0.01 99.26 83 | 1 0.01 99.27 85 | 3 0.03 99.30 86 | 38 0.38 99.68 88 | 1 0.01 99.69 93 | 1 0.01 99.70 96 | 2 0.02 99.72 97 | 2 0.02 99.74 99 | 26 0.26 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016