Frequencies for first 10,000 rows of scpwi13d variable in nhamcsopd2006 dataset : scope | procedure | #1 - 3 | digit | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,744 97.44 97.44 221 | 2 0.02 97.46 314 | 1 0.01 97.47 332 | 6 0.06 97.53 451 | 37 0.37 97.90 452 | 109 1.09 98.99 454 | 3 0.03 99.02 482 | 1 0.01 99.03 492 | 2 0.02 99.05 511 | 2 0.02 99.07 512 | 3 0.03 99.10 542 | 6 0.06 99.16 563 | 2 0.02 99.18 573 | 25 0.25 99.43 681 | 23 0.23 99.66 682 | 2 0.02 99.68 702 | 25 0.25 99.93 802 | 3 0.03 99.96 893 | 1 0.01 99.97 999 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016