Frequencies for first 10,000 rows of proc5 variable in nhamcsopd1993 dataset : service #5 | procedure | code - 4 | digits | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,962 99.62 99.62 1341 | 1 0.01 99.63 1371 | 4 0.04 99.67 222- | 1 0.01 99.68 344- | 1 0.01 99.69 4523 | 1 0.01 99.70 6011 | 1 0.01 99.71 6712 | 1 0.01 99.72 8154 | 1 0.01 99.73 8191 | 1 0.01 99.74 8511 | 1 0.01 99.75 8744 | 2 0.02 99.77 8779 | 1 0.01 99.78 8879 | 1 0.01 99.79 8897 | 1 0.01 99.80 8908 | 1 0.01 99.81 8939 | 2 0.02 99.83 8952 | 2 0.02 99.85 9132 | 1 0.01 99.86 9141 | 2 0.02 99.88 9142 | 5 0.05 99.93 9146 | 1 0.01 99.94 9194 | 1 0.01 99.95 9439 | 1 0.01 99.96 9959 | 1 0.01 99.97 9999 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016