Frequencies for first 10,000 rows of amb22d variable in namcs2001 dataset : surgical | procedure | #2 - 2 | digit | Freq. Percent Cum. ------------+----------------------------------- 00 | 9,804 98.04 98.04 03 | 1 0.01 98.05 04 | 1 0.01 98.06 08 | 1 0.01 98.07 13 | 5 0.05 98.12 14 | 1 0.01 98.13 18 | 2 0.02 98.15 20 | 3 0.03 98.18 21 | 6 0.06 98.24 22 | 4 0.04 98.28 27 | 2 0.02 98.30 28 | 1 0.01 98.31 29 | 2 0.02 98.33 31 | 1 0.01 98.34 36 | 2 0.02 98.36 37 | 2 0.02 98.38 39 | 1 0.01 98.39 40 | 3 0.03 98.42 45 | 1 0.01 98.43 47 | 1 0.01 98.44 53 | 1 0.01 98.45 54 | 1 0.01 98.46 55 | 1 0.01 98.47 57 | 3 0.03 98.50 58 | 1 0.01 98.51 59 | 3 0.03 98.54 61 | 1 0.01 98.55 63 | 1 0.01 98.56 65 | 3 0.03 98.59 66 | 1 0.01 98.60 67 | 1 0.01 98.61 68 | 3 0.03 98.64 69 | 5 0.05 98.69 70 | 2 0.02 98.71 71 | 1 0.01 98.72 78 | 1 0.01 98.73 79 | 1 0.01 98.74 80 | 6 0.06 98.80 81 | 7 0.07 98.87 82 | 1 0.01 98.88 83 | 2 0.02 98.90 84 | 1 0.01 98.91 85 | 11 0.11 99.02 86 | 77 0.77 99.79 87 | 1 0.01 99.80 88 | 2 0.02 99.82 89 | 1 0.01 99.83 93 | 1 0.01 99.84 96 | 1 0.01 99.85 97 | 1 0.01 99.86 98 | 1 0.01 99.87 99 | 13 0.13 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016