Frequencies for first 10,000 rows of amb23d variable in nhamcsopd2002 dataset : surgical | procedure | #2 - 2 | digit | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,894 98.94 98.94 044 | 1 0.01 98.95 047 | 1 0.01 98.96 137 | 9 0.09 99.05 147 | 1 0.01 99.06 186 | 1 0.01 99.07 187 | 1 0.01 99.08 194 | 1 0.01 99.09 200 | 1 0.01 99.10 204 | 1 0.01 99.11 231 | 1 0.01 99.12 360 | 1 0.01 99.13 389 | 4 0.04 99.17 395 | 2 0.02 99.19 401 | 2 0.02 99.21 402 | 1 0.01 99.22 446 | 1 0.01 99.23 449 | 1 0.01 99.24 491 | 1 0.01 99.25 493 | 1 0.01 99.26 512 | 1 0.01 99.27 530 | 1 0.01 99.28 542 | 1 0.01 99.29 573 | 1 0.01 99.30 585 | 1 0.01 99.31 640 | 1 0.01 99.32 654 | 1 0.01 99.33 656 | 3 0.03 99.36 671 | 5 0.05 99.41 673 | 2 0.02 99.43 682 | 2 0.02 99.45 690 | 2 0.02 99.47 702 | 1 0.01 99.48 713 | 1 0.01 99.49 775 | 1 0.01 99.50 776 | 2 0.02 99.52 780 | 1 0.01 99.53 790 | 1 0.01 99.54 805 | 1 0.01 99.55 806 | 2 0.02 99.57 808 | 2 0.02 99.59 819 | 2 0.02 99.61 820 | 1 0.01 99.62 836 | 1 0.01 99.63 839 | 1 0.01 99.64 851 | 2 0.02 99.66 863 | 1 0.01 99.67 866 | 1 0.01 99.68 867 | 1 0.01 99.69 868 | 1 0.01 99.70 875 | 1 0.01 99.71 935 | 8 0.08 99.79 953 | 1 0.01 99.80 965 | 1 0.01 99.81 971 | 2 0.02 99.83 992 | 15 0.15 99.98 993 | 1 0.01 99.99 999 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016