Frequencies for first 10,000 rows of proc12d variable in namcs2011 dataset : Procedure 1 | - 2 digit | Freq. Percent Cum. ------------+----------------------------------- -9 | 6,933 69.33 69.33 00 | 1 0.01 69.34 03 | 10 0.10 69.44 04 | 3 0.03 69.47 05 | 1 0.01 69.48 06 | 13 0.13 69.61 08 | 3 0.03 69.64 13 | 1 0.01 69.65 16 | 1 0.01 69.66 18 | 12 0.12 69.78 21 | 4 0.04 69.82 22 | 1 0.01 69.83 23 | 1 0.01 69.84 27 | 1 0.01 69.85 31 | 3 0.03 69.88 37 | 1 0.01 69.89 38 | 7 0.07 69.96 39 | 8 0.08 70.04 40 | 3 0.03 70.07 41 | 1 0.01 70.08 42 | 5 0.05 70.13 44 | 5 0.05 70.18 45 | 128 1.28 71.46 46 | 1 0.01 71.47 48 | 6 0.06 71.53 49 | 6 0.06 71.59 50 | 1 0.01 71.60 51 | 13 0.13 71.73 52 | 3 0.03 71.76 53 | 11 0.11 71.87 54 | 5 0.05 71.92 55 | 1 0.01 71.93 57 | 6 0.06 71.99 60 | 1 0.01 72.00 64 | 1 0.01 72.01 67 | 1 0.01 72.02 68 | 3 0.03 72.05 69 | 5 0.05 72.10 70 | 4 0.04 72.14 75 | 1 0.01 72.15 79 | 3 0.03 72.18 80 | 2 0.02 72.20 81 | 29 0.29 72.49 82 | 3 0.03 72.52 83 | 5 0.05 72.57 85 | 13 0.13 72.70 86 | 142 1.42 74.12 87 | 7 0.07 74.19 88 | 26 0.26 74.45 89 | 1,647 16.47 90.92 90 | 160 1.60 92.52 91 | 123 1.23 93.75 92 | 4 0.04 93.79 93 | 112 1.12 94.91 94 | 55 0.55 95.46 95 | 143 1.43 96.89 96 | 28 0.28 97.17 97 | 24 0.24 97.41 98 | 3 0.03 97.44 99 | 256 2.56 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016