Frequencies for first 10,000 rows of othimg13 variable in nhamcsopd1995 dataset : other | imaging - | icd-9-cm | procedure - | 3dgt | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,904 99.04 99.04 681 | 1 0.01 99.05 753 | 4 0.04 99.09 891 | 5 0.05 99.14 893 | 10 0.10 99.24 894 | 6 0.06 99.30 895 | 8 0.08 99.38 896 | 1 0.01 99.39 903 | 1 0.01 99.40 904 | 1 0.01 99.41 914 | 32 0.32 99.73 916 | 1 0.01 99.74 918 | 1 0.01 99.75 919 | 4 0.04 99.79 921 | 2 0.02 99.81 951 | 12 0.12 99.93 999 | 7 0.07 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016