Frequencies for first 10,000 rows of proc22d variable in nhamcsopd2009 dataset : procedure 2 | - 2 digit | Freq. Percent Cum. ------------+----------------------------------- -9 | 9,109 91.09 91.09 00 | 1 0.01 91.10 02 | 2 0.02 91.12 03 | 5 0.05 91.17 04 | 1 0.01 91.18 06 | 1 0.01 91.19 07 | 1 0.01 91.20 13 | 2 0.02 91.22 17 | 1 0.01 91.23 18 | 1 0.01 91.24 20 | 4 0.04 91.28 21 | 1 0.01 91.29 22 | 2 0.02 91.31 28 | 9 0.09 91.40 29 | 1 0.01 91.41 31 | 1 0.01 91.42 33 | 2 0.02 91.44 37 | 1 0.01 91.45 38 | 2 0.02 91.47 42 | 4 0.04 91.51 44 | 7 0.07 91.58 45 | 31 0.31 91.89 47 | 2 0.02 91.91 48 | 4 0.04 91.95 49 | 1 0.01 91.96 51 | 7 0.07 92.03 53 | 3 0.03 92.06 54 | 2 0.02 92.08 55 | 1 0.01 92.09 56 | 3 0.03 92.12 57 | 4 0.04 92.16 58 | 2 0.02 92.18 60 | 1 0.01 92.19 64 | 3 0.03 92.22 66 | 1 0.01 92.23 67 | 6 0.06 92.29 68 | 5 0.05 92.34 69 | 7 0.07 92.41 70 | 3 0.03 92.44 73 | 2 0.02 92.46 75 | 61 0.61 93.07 77 | 1 0.01 93.08 78 | 1 0.01 93.09 79 | 2 0.02 93.11 80 | 1 0.01 93.12 81 | 4 0.04 93.16 83 | 7 0.07 93.23 84 | 1 0.01 93.24 85 | 1 0.01 93.25 86 | 45 0.45 93.70 87 | 9 0.09 93.79 88 | 5 0.05 93.84 89 | 201 2.01 95.85 90 | 15 0.15 96.00 91 | 26 0.26 96.26 92 | 20 0.20 96.46 93 | 163 1.63 98.09 94 | 8 0.08 98.17 95 | 113 1.13 99.30 96 | 6 0.06 99.36 97 | 6 0.06 99.42 98 | 1 0.01 99.43 99 | 57 0.57 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016