Frequencies for first 10,000 rows of amb2 variable in namcs2002 dataset : Surgical | procedure | #2 - 4 | digit | Freq. Percent Cum. ------------+----------------------------------- 0000 | 9,846 98.46 98.46 0309 | 1 0.01 98.47 0443 | 1 0.01 98.48 062- | 1 0.01 98.49 0822 | 1 0.01 98.50 0825 | 1 0.01 98.51 1319 | 1 0.01 98.52 1371 | 10 0.10 98.62 1434 | 1 0.01 98.63 1454 | 1 0.01 98.64 1699 | 1 0.01 98.65 1829 | 3 0.03 98.68 194- | 1 0.01 98.69 2001 | 1 0.01 98.70 2103 | 1 0.01 98.71 2122 | 2 0.02 98.73 2132 | 4 0.04 98.77 215- | 1 0.01 98.78 2169 | 2 0.02 98.80 2171 | 1 0.01 98.81 2188 | 4 0.04 98.85 2200 | 1 0.01 98.86 222- | 1 0.01 98.87 2262 | 1 0.01 98.88 2723 | 2 0.02 98.90 2759 | 1 0.01 98.91 282- | 1 0.01 98.92 286- | 2 0.02 98.94 294- | 2 0.02 98.96 3229 | 1 0.01 98.97 324- | 1 0.01 98.98 3601 | 1 0.01 98.99 3950 | 1 0.01 99.00 3990 | 1 0.01 99.01 4523 | 1 0.01 99.02 4551 | 1 0.01 99.03 4579 | 1 0.01 99.04 4601 | 1 0.01 99.05 4642 | 1 0.01 99.06 4825 | 1 0.01 99.07 4946 | 2 0.02 99.09 5011 | 1 0.01 99.10 5675 | 1 0.01 99.11 594- | 1 0.01 99.12 600- | 1 0.01 99.13 6069 | 1 0.01 99.14 7051 | 1 0.01 99.15 7075 | 1 0.01 99.16 7766 | 1 0.01 99.17 7781 | 1 0.01 99.18 8041 | 1 0.01 99.19 806- | 3 0.03 99.22 8102 | 1 0.01 99.23 8128 | 1 0.01 99.24 8192 | 1 0.01 99.25 8201 | 1 0.01 99.26 8363 | 1 0.01 99.27 8511 | 2 0.02 99.29 8589 | 1 0.01 99.30 8604 | 3 0.03 99.33 8611 | 5 0.05 99.38 8622 | 1 0.01 99.39 8628 | 1 0.01 99.40 863- | 24 0.24 99.64 8659 | 1 0.01 99.65 8670 | 1 0.01 99.66 8683 | 1 0.01 99.67 8689 | 1 0.01 99.68 8848 | 1 0.01 99.69 9354 | 1 0.01 99.70 9625 | 1 0.01 99.71 9652 | 1 0.01 99.72 9783 | 1 0.01 99.73 9789 | 1 0.01 99.74 9903 | 1 0.01 99.75 9923 | 14 0.14 99.89 9929 | 5 0.05 99.94 9955 | 2 0.02 99.96 9999 | 4 0.04 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016