Frequencies for first 10,000 rows of digsc23d variable in namcs2001 dataset : diag/screen | service | write-in #2 | - 3 digit | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,866 98.66 98.66 203 | 1 0.01 98.67 753 | 4 0.04 98.71 877 | 1 0.01 98.72 887 | 20 0.20 98.92 889 | 1 0.01 98.93 891 | 17 0.17 99.10 892 | 4 0.04 99.14 893 | 24 0.24 99.38 894 | 4 0.04 99.42 895 | 4 0.04 99.46 905 | 2 0.02 99.48 909 | 4 0.04 99.52 921 | 1 0.01 99.53 930 | 23 0.23 99.76 935 | 2 0.02 99.78 950 | 7 0.07 99.85 952 | 1 0.01 99.86 954 | 8 0.08 99.94 965 | 2 0.02 99.96 995 | 1 0.01 99.97 999 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016