Frequencies for first 10,000 rows of amb22d variable in nhamcsopd2002 dataset : amb22d | Freq. Percent Cum. ------------+----------------------------------- 00 | 9,894 98.94 98.94 04 | 2 0.02 98.96 13 | 9 0.09 99.05 14 | 1 0.01 99.06 18 | 2 0.02 99.08 19 | 1 0.01 99.09 20 | 2 0.02 99.11 23 | 1 0.01 99.12 36 | 1 0.01 99.13 38 | 4 0.04 99.17 39 | 2 0.02 99.19 40 | 3 0.03 99.22 44 | 2 0.02 99.24 49 | 2 0.02 99.26 51 | 1 0.01 99.27 53 | 1 0.01 99.28 54 | 1 0.01 99.29 57 | 1 0.01 99.30 58 | 1 0.01 99.31 64 | 1 0.01 99.32 65 | 4 0.04 99.36 67 | 7 0.07 99.43 68 | 2 0.02 99.45 69 | 2 0.02 99.47 70 | 1 0.01 99.48 71 | 1 0.01 99.49 77 | 3 0.03 99.52 78 | 1 0.01 99.53 79 | 1 0.01 99.54 80 | 5 0.05 99.59 81 | 2 0.02 99.61 82 | 1 0.01 99.62 83 | 2 0.02 99.64 85 | 2 0.02 99.66 86 | 4 0.04 99.70 87 | 1 0.01 99.71 93 | 8 0.08 99.79 95 | 1 0.01 99.80 96 | 1 0.01 99.81 97 | 2 0.02 99.83 99 | 17 0.17 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016