Frequencies for first 10,000 rows of proc32d variable in namcs2013 dataset : Procedure 3 | - 2 digit | Freq. Percent Cum. ------------+----------------------------------- -9 | 9,560 95.60 95.60 03 | 3 0.03 95.63 11 | 1 0.01 95.64 12 | 2 0.02 95.66 13 | 6 0.06 95.72 14 | 3 0.03 95.75 16 | 2 0.02 95.77 17 | 2 0.02 95.79 18 | 2 0.02 95.81 21 | 1 0.01 95.82 22 | 13 0.13 95.95 27 | 1 0.01 95.96 29 | 1 0.01 95.97 31 | 4 0.04 96.01 38 | 4 0.04 96.05 39 | 1 0.01 96.06 41 | 2 0.02 96.08 43 | 1 0.01 96.09 45 | 3 0.03 96.12 48 | 1 0.01 96.13 51 | 1 0.01 96.14 54 | 1 0.01 96.15 55 | 1 0.01 96.16 56 | 2 0.02 96.18 57 | 2 0.02 96.20 67 | 1 0.01 96.21 68 | 1 0.01 96.22 69 | 1 0.01 96.23 74 | 2 0.02 96.25 75 | 1 0.01 96.26 81 | 5 0.05 96.31 83 | 4 0.04 96.35 86 | 7 0.07 96.42 87 | 3 0.03 96.45 88 | 8 0.08 96.53 89 | 128 1.28 97.81 90 | 43 0.43 98.24 91 | 22 0.22 98.46 92 | 1 0.01 98.47 93 | 19 0.19 98.66 94 | 2 0.02 98.68 95 | 51 0.51 99.19 96 | 4 0.04 99.23 97 | 2 0.02 99.25 99 | 75 0.75 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 27 Mar 2017