Frequencies for first 10,000 rows of proc33d variable in namcs2010 dataset : procedure 3 | - 3 digit | Freq. Percent Cum. ------------+----------------------------------- -9 | 9,794 97.94 97.94 030 | 3 0.03 97.97 061 | 1 0.01 97.98 220 | 1 0.01 97.99 361 | 1 0.01 98.00 449 | 1 0.01 98.01 451 | 1 0.01 98.02 452 | 1 0.01 98.03 542 | 1 0.01 98.04 690 | 1 0.01 98.05 810 | 1 0.01 98.06 819 | 1 0.01 98.07 860 | 2 0.02 98.09 861 | 7 0.07 98.16 863 | 1 0.01 98.17 891 | 3 0.03 98.20 893 | 62 0.62 98.82 894 | 1 0.01 98.83 895 | 20 0.20 99.03 897 | 15 0.15 99.18 903 | 7 0.07 99.25 909 | 1 0.01 99.26 913 | 1 0.01 99.27 914 | 1 0.01 99.28 930 | 5 0.05 99.33 933 | 2 0.02 99.35 935 | 1 0.01 99.36 936 | 1 0.01 99.37 939 | 2 0.02 99.39 950 | 38 0.38 99.77 951 | 1 0.01 99.78 954 | 5 0.05 99.83 965 | 1 0.01 99.84 992 | 1 0.01 99.85 993 | 1 0.01 99.86 994 | 2 0.02 99.88 995 | 10 0.10 99.98 999 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016