Frequencies for first 10,000 rows of amb23 variable in nhamcsopd1996 dataset : ambulatory | surgical | proc #2 - 3 | dgt | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,922 99.22 99.22 131 | 1 0.01 99.23 137 | 16 0.16 99.39 145 | 1 0.01 99.40 225 | 2 0.02 99.42 234 | 1 0.01 99.43 283 | 1 0.01 99.44 324 | 1 0.01 99.45 389 | 3 0.03 99.48 399 | 1 0.01 99.49 422 | 1 0.01 99.50 429 | 4 0.04 99.54 441 | 3 0.03 99.57 451 | 4 0.04 99.61 452 | 1 0.01 99.62 454 | 5 0.05 99.67 493 | 1 0.01 99.68 494 | 1 0.01 99.69 511 | 1 0.01 99.70 542 | 2 0.02 99.72 573 | 1 0.01 99.73 597 | 1 0.01 99.74 631 | 1 0.01 99.75 662 | 1 0.01 99.76 663 | 1 0.01 99.77 671 | 1 0.01 99.78 784 | 1 0.01 99.79 790 | 1 0.01 99.80 802 | 1 0.01 99.81 808 | 1 0.01 99.82 852 | 1 0.01 99.83 860 | 2 0.02 99.85 862 | 3 0.03 99.88 863 | 1 0.01 99.89 865 | 1 0.01 99.90 866 | 1 0.01 99.91 868 | 1 0.01 99.92 935 | 4 0.04 99.96 965 | 1 0.01 99.97 976 | 1 0.01 99.98 990 | 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