Frequencies for first 10,000 rows of othimg1 variable in nhamcsopd1996 dataset : other | imaging - | icd-9-cm | procedure - | 4dgt | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,912 99.12 99.12 4319 | 1 0.01 99.13 6712 | 2 0.02 99.15 7534 | 5 0.05 99.20 7535 | 2 0.02 99.22 8619 | 1 0.01 99.23 8842 | 1 0.01 99.24 8898 | 1 0.01 99.25 8914 | 1 0.01 99.26 8915 | 3 0.03 99.29 8937 | 1 0.01 99.30 8938 | 4 0.04 99.34 8944 | 2 0.02 99.36 8950 | 1 0.01 99.37 8952 | 7 0.07 99.44 9094 | 1 0.01 99.45 9099 | 2 0.02 99.47 9129 | 3 0.03 99.50 9142 | 22 0.22 99.72 9143 | 1 0.01 99.73 9146 | 8 0.08 99.81 9149 | 1 0.01 99.82 9169 | 3 0.03 99.85 9191 | 2 0.02 99.87 9214 | 1 0.01 99.88 9304 | 2 0.02 99.90 9308 | 1 0.01 99.91 9399 | 1 0.01 99.92 9401 | 1 0.01 99.93 9541 | 1 0.01 99.94 9999 | 6 0.06 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016