Frequencies for first 10,000 rows of othimg1 variable in namcs1995 dataset : other | imaging - | icd-9-cm | procedure - | 4dgt | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,934 99.34 99.34 8890 | 2 0.02 99.36 8937 | 8 0.08 99.44 8938 | 1 0.01 99.45 8941 | 1 0.01 99.46 8944 | 3 0.03 99.49 8950 | 2 0.02 99.51 8952 | 17 0.17 99.68 8965 | 2 0.02 99.70 9094 | 1 0.01 99.71 9099 | 7 0.07 99.78 9141 | 6 0.06 99.84 9142 | 4 0.04 99.88 9146 | 4 0.04 99.92 9169 | 1 0.01 99.93 9195 | 1 0.01 99.94 9308 | 2 0.02 99.96 9541 | 1 0.01 99.97 9652 | 1 0.01 99.98 9999 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016