Frequencies for first 10,000 rows of amb23 variable in nhamcsopd1998 dataset : ambulatory | surg | procedure | #2 - 3 dgt | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,959 99.59 99.59 039 | 1 0.01 99.60 422 | 9 0.09 99.69 429 | 2 0.02 99.71 451 | 4 0.04 99.75 452 | 4 0.04 99.79 492 | 1 0.01 99.80 535 | 1 0.01 99.81 573 | 1 0.01 99.82 670 | 2 0.02 99.84 671 | 3 0.03 99.87 695 | 1 0.01 99.88 702 | 1 0.01 99.89 753 | 1 0.01 99.90 780 | 1 0.01 99.91 862 | 1 0.01 99.92 863 | 2 0.02 99.94 866 | 1 0.01 99.95 891 | 1 0.01 99.96 915 | 1 0.01 99.97 961 | 1 0.01 99.98 976 | 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