Frequencies for first 10,000 rows of proc43d variable in namcs2011 dataset : Procedure 4 | - 3 digit | Freq. Percent Cum. ------------+----------------------------------- -9 | 9,819 98.19 98.19 291 | 1 0.01 98.20 438 | 1 0.01 98.21 440 | 2 0.02 98.23 442 | 1 0.01 98.24 443 | 1 0.01 98.25 483 | 1 0.01 98.26 494 | 2 0.02 98.28 541 | 1 0.01 98.29 684 | 1 0.01 98.30 861 | 6 0.06 98.36 876 | 1 0.01 98.37 891 | 4 0.04 98.41 892 | 1 0.01 98.42 893 | 28 0.28 98.70 895 | 94 0.94 99.64 897 | 2 0.02 99.66 903 | 1 0.01 99.67 909 | 3 0.03 99.70 919 | 1 0.01 99.71 920 | 4 0.04 99.75 939 | 1 0.01 99.76 950 | 17 0.17 99.93 954 | 3 0.03 99.96 965 | 1 0.01 99.97 992 | 1 0.01 99.98 995 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016