Frequencies for first 10,000 rows of amb23d variable in nhamcsopd2004 dataset : surgical | procedure | #2 - 3 | digit | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,860 98.60 98.60 039 | 2 0.02 98.62 044 | 1 0.01 98.63 048 | 1 0.01 98.64 052 | 1 0.01 98.65 088 | 1 0.01 98.66 128 | 1 0.01 98.67 137 | 10 0.10 98.77 145 | 2 0.02 98.79 147 | 1 0.01 98.80 218 | 2 0.02 98.82 283 | 1 0.01 98.83 332 | 2 0.02 98.85 349 | 1 0.01 98.86 389 | 5 0.05 98.91 399 | 2 0.02 98.93 402 | 1 0.01 98.94 429 | 1 0.01 98.95 446 | 1 0.01 98.96 451 | 7 0.07 99.03 453 | 1 0.01 99.04 454 | 2 0.02 99.06 494 | 1 0.01 99.07 497 | 1 0.01 99.08 540 | 2 0.02 99.10 541 | 1 0.01 99.11 598 | 2 0.02 99.13 600 | 2 0.02 99.15 631 | 1 0.01 99.16 656 | 4 0.04 99.20 663 | 1 0.01 99.21 673 | 1 0.01 99.22 686 | 1 0.01 99.23 690 | 1 0.01 99.24 708 | 1 0.01 99.25 735 | 1 0.01 99.26 778 | 1 0.01 99.27 786 | 2 0.02 99.29 793 | 2 0.02 99.31 806 | 1 0.01 99.32 808 | 1 0.01 99.33 810 | 1 0.01 99.34 814 | 1 0.01 99.35 815 | 1 0.01 99.36 818 | 1 0.01 99.37 819 | 2 0.02 99.39 820 | 2 0.02 99.41 839 | 1 0.01 99.42 850 | 1 0.01 99.43 851 | 2 0.02 99.45 852 | 2 0.02 99.47 860 | 1 0.01 99.48 861 | 4 0.04 99.52 862 | 4 0.04 99.56 863 | 4 0.04 99.60 865 | 4 0.04 99.64 866 | 2 0.02 99.66 867 | 1 0.01 99.67 868 | 1 0.01 99.68 875 | 1 0.01 99.69 884 | 1 0.01 99.70 892 | 1 0.01 99.71 922 | 1 0.01 99.72 935 | 5 0.05 99.77 978 | 2 0.02 99.79 982 | 1 0.01 99.80 985 | 1 0.01 99.81 990 | 1 0.01 99.82 991 | 1 0.01 99.83 992 | 7 0.07 99.90 999 | 10 0.10 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016