Frequencies for first 10,000 rows of amb23 variable in nhamcsopd1999 dataset : ambulatory | surg | procedure | #2 - 3 dgt | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,908 99.08 99.08 039 | 1 0.01 99.09 082 | 1 0.01 99.10 216 | 1 0.01 99.11 300 | 1 0.01 99.12 342 | 1 0.01 99.13 395 | 2 0.02 99.15 401 | 2 0.02 99.17 402 | 1 0.01 99.18 422 | 1 0.01 99.19 429 | 6 0.06 99.25 441 | 1 0.01 99.26 451 | 5 0.05 99.31 452 | 3 0.03 99.34 454 | 15 0.15 99.49 549 | 1 0.01 99.50 560 | 2 0.02 99.52 563 | 1 0.01 99.53 570 | 1 0.01 99.54 573 | 1 0.01 99.55 574 | 2 0.02 99.57 598 | 1 0.01 99.58 653 | 1 0.01 99.59 672 | 1 0.01 99.60 690 | 3 0.03 99.63 801 | 1 0.01 99.64 806 | 4 0.04 99.68 808 | 5 0.05 99.73 809 | 1 0.01 99.74 819 | 1 0.01 99.75 820 | 1 0.01 99.76 851 | 3 0.03 99.79 861 | 1 0.01 99.80 862 | 2 0.02 99.82 863 | 3 0.03 99.85 866 | 4 0.04 99.89 877 | 1 0.01 99.90 885 | 1 0.01 99.91 935 | 2 0.02 99.93 963 | 3 0.03 99.96 965 | 1 0.01 99.97 981 | 1 0.01 99.98 999 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016