Frequencies for first 10,000 rows of amb2 variable in nhamcsopd1997 dataset : ambulatory | surgical | procedure | #2 | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,960 99.60 99.60 1291 | 1 0.01 99.61 1371 | 1 0.01 99.62 4292 | 1 0.01 99.63 4823 | 1 0.01 99.64 4945 | 1 0.01 99.65 5310 | 1 0.01 99.66 5993 | 1 0.01 99.67 6629 | 2 0.02 99.69 6711 | 1 0.01 99.70 6739 | 1 0.01 99.71 6812 | 3 0.03 99.74 6829 | 1 0.01 99.75 6909 | 2 0.02 99.77 7021 | 1 0.01 99.78 8046 | 1 0.01 99.79 806- | 2 0.02 99.81 8192 | 2 0.02 99.83 8396 | 1 0.01 99.84 863- | 1 0.01 99.85 8674 | 1 0.01 99.86 8878 | 4 0.04 99.90 8937 | 1 0.01 99.91 9169 | 2 0.02 99.93 9357 | 1 0.01 99.94 9383 | 1 0.01 99.95 9762 | 1 0.01 99.96 9789 | 3 0.03 99.99 9923 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016