Frequencies for first 10,000 rows of amb2 variable in nhamcsopd2002 dataset : surgical | procedure | #2 - 4 | digit | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,894 98.94 98.94 0449 | 1 0.01 98.95 0479 | 1 0.01 98.96 1371 | 9 0.09 99.05 1474 | 1 0.01 99.06 186- | 1 0.01 99.07 1879 | 1 0.01 99.08 194- | 1 0.01 99.09 2001 | 1 0.01 99.10 2041 | 1 0.01 99.11 2319 | 1 0.01 99.12 3601 | 1 0.01 99.13 3893 | 3 0.03 99.16 3895 | 1 0.01 99.17 3952 | 1 0.01 99.18 3958 | 1 0.01 99.19 4011 | 2 0.02 99.21 4024 | 1 0.01 99.22 4466 | 1 0.01 99.23 4499 | 1 0.01 99.24 4911 | 1 0.01 99.25 4939 | 1 0.01 99.26 5123 | 1 0.01 99.27 5300 | 1 0.01 99.28 5422 | 1 0.01 99.29 5733 | 1 0.01 99.30 585- | 1 0.01 99.31 640- | 1 0.01 99.32 6549 | 1 0.01 99.33 6561 | 2 0.02 99.35 6563 | 1 0.01 99.36 6712 | 5 0.05 99.41 6732 | 2 0.02 99.43 6829 | 2 0.02 99.45 6909 | 2 0.02 99.47 7024 | 1 0.01 99.48 713- | 1 0.01 99.49 7758 | 1 0.01 99.50 7762 | 1 0.01 99.51 7768 | 1 0.01 99.52 7804 | 1 0.01 99.53 7906 | 1 0.01 99.54 8059 | 1 0.01 99.55 806- | 2 0.02 99.57 8086 | 2 0.02 99.59 8192 | 2 0.02 99.61 8201 | 1 0.01 99.62 8363 | 1 0.01 99.63 8396 | 1 0.01 99.64 8511 | 1 0.01 99.65 8519 | 1 0.01 99.66 863- | 1 0.01 99.67 8669 | 1 0.01 99.68 8670 | 1 0.01 99.69 8689 | 1 0.01 99.70 8753 | 1 0.01 99.71 9353 | 1 0.01 99.72 9354 | 2 0.02 99.74 9357 | 2 0.02 99.76 9359 | 3 0.03 99.79 9531 | 1 0.01 99.80 9659 | 1 0.01 99.81 9712 | 1 0.01 99.82 9714 | 1 0.01 99.83 9923 | 10 0.10 99.93 9924 | 1 0.01 99.94 9929 | 4 0.04 99.98 9939 | 1 0.01 99.99 9999 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016