Frequencies for first 10,000 rows of proc22d variable in nhamcsopd2010 dataset : procedure 2 | - 2 digit | Freq. Percent Cum. ------------+----------------------------------- -9 | 9,090 90.90 90.90 02 | 1 0.01 90.91 08 | 2 0.02 90.93 11 | 1 0.01 90.94 13 | 4 0.04 90.98 14 | 3 0.03 91.01 20 | 3 0.03 91.04 22 | 1 0.01 91.05 25 | 1 0.01 91.06 28 | 1 0.01 91.07 31 | 2 0.02 91.09 32 | 1 0.01 91.10 33 | 1 0.01 91.11 34 | 2 0.02 91.13 37 | 4 0.04 91.17 38 | 2 0.02 91.19 40 | 2 0.02 91.21 42 | 7 0.07 91.28 43 | 1 0.01 91.29 44 | 5 0.05 91.34 45 | 36 0.36 91.70 46 | 1 0.01 91.71 48 | 9 0.09 91.80 49 | 1 0.01 91.81 51 | 2 0.02 91.83 53 | 4 0.04 91.87 54 | 2 0.02 91.89 55 | 1 0.01 91.90 56 | 1 0.01 91.91 57 | 1 0.01 91.92 63 | 1 0.01 91.93 64 | 1 0.01 91.94 67 | 10 0.10 92.04 68 | 4 0.04 92.08 69 | 1 0.01 92.09 70 | 6 0.06 92.15 75 | 28 0.28 92.43 77 | 1 0.01 92.44 78 | 1 0.01 92.45 80 | 4 0.04 92.49 81 | 4 0.04 92.53 82 | 1 0.01 92.54 83 | 3 0.03 92.57 85 | 1 0.01 92.58 86 | 35 0.35 92.93 87 | 1 0.01 92.94 88 | 6 0.06 93.00 89 | 253 2.53 95.53 90 | 27 0.27 95.80 91 | 31 0.31 96.11 92 | 3 0.03 96.14 93 | 151 1.51 97.65 94 | 38 0.38 98.03 95 | 135 1.35 99.38 96 | 5 0.05 99.43 97 | 8 0.08 99.51 98 | 2 0.02 99.53 99 | 47 0.47 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016