Frequencies for first 10,000 rows of amb22d variable in namcs2003 dataset : surgical | procedure | #2 - 2 | digit | Freq. Percent Cum. ------------+----------------------------------- 00 | 9,844 98.44 98.44 12 | 2 0.02 98.46 13 | 9 0.09 98.55 20 | 6 0.06 98.61 21 | 13 0.13 98.74 22 | 4 0.04 98.78 26 | 1 0.01 98.79 28 | 3 0.03 98.82 31 | 1 0.01 98.83 38 | 3 0.03 98.86 39 | 2 0.02 98.88 40 | 2 0.02 98.90 46 | 1 0.01 98.91 48 | 1 0.01 98.92 53 | 1 0.01 98.93 57 | 2 0.02 98.95 58 | 2 0.02 98.97 59 | 1 0.01 98.98 60 | 1 0.01 98.99 61 | 1 0.01 99.00 62 | 2 0.02 99.02 64 | 1 0.01 99.03 65 | 1 0.01 99.04 66 | 2 0.02 99.06 67 | 1 0.01 99.07 68 | 3 0.03 99.10 77 | 1 0.01 99.11 80 | 2 0.02 99.13 81 | 2 0.02 99.15 83 | 1 0.01 99.16 84 | 2 0.02 99.18 85 | 2 0.02 99.20 86 | 57 0.57 99.77 87 | 1 0.01 99.78 88 | 1 0.01 99.79 89 | 1 0.01 99.80 91 | 1 0.01 99.81 93 | 2 0.02 99.83 95 | 1 0.01 99.84 96 | 2 0.02 99.86 97 | 3 0.03 99.89 99 | 11 0.11 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016