Frequencies for first 10,000 rows of proc4 variable in namcs1993 dataset : service #4 | procedure | code - 4 | digits | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,945 99.45 99.45 0392 | 1 0.01 99.46 3726 | 1 0.01 99.47 3812 | 1 0.01 99.48 4513 | 1 0.01 99.49 7024 | 1 0.01 99.50 8737 | 3 0.03 99.53 8744 | 2 0.02 99.55 8762 | 1 0.01 99.56 8764 | 2 0.02 99.58 8826 | 1 0.01 99.59 8838 | 1 0.01 99.60 8874 | 2 0.02 99.62 8875 | 1 0.01 99.63 8878 | 1 0.01 99.64 8879 | 2 0.02 99.66 8926 | 1 0.01 99.67 8936 | 1 0.01 99.68 8939 | 2 0.02 99.70 8944 | 1 0.01 99.71 8950 | 2 0.02 99.73 8952 | 1 0.01 99.74 8965 | 1 0.01 99.75 9146 | 1 0.01 99.76 9201 | 1 0.01 99.77 9215 | 1 0.01 99.78 9319 | 16 0.16 99.94 9339 | 1 0.01 99.95 9353 | 1 0.01 99.96 9357 | 1 0.01 99.97 9367 | 2 0.02 99.99 9509 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016