Frequencies for first 10,000 rows of proc53d variable in namcs1993 dataset : service #5 | procedure | code - 3 | digits | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,987 99.87 99.87 039 | 2 0.02 99.89 496 | 1 0.01 99.90 873 | 1 0.01 99.91 876 | 1 0.01 99.92 887 | 1 0.01 99.93 893 | 1 0.01 99.94 894 | 1 0.01 99.95 897 | 1 0.01 99.96 933 | 1 0.01 99.97 942 | 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