Frequencies for first 10,000 rows of amb2r variable in nhamcsopd2001 dataset : surgical | procedure | write-in #2 | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,924 99.24 99.24 25 | 5 0.05 99.29 849 | 1 0.01 99.30 870 | 1 0.01 99.31 1319 | 1 0.01 99.32 1371 | 2 0.02 99.34 2220 | 1 0.01 99.35 2264 | 2 0.02 99.37 2319 | 1 0.01 99.38 2820 | 1 0.01 99.39 2830 | 1 0.01 99.40 3323 | 2 0.02 99.42 4523 | 1 0.01 99.43 4542 | 2 0.02 99.45 4576 | 1 0.01 99.46 4579 | 1 0.01 99.47 4679 | 1 0.01 99.48 4903 | 1 0.01 99.49 4923 | 1 0.01 99.50 4946 | 1 0.01 99.51 4947 | 1 0.01 99.52 5011 | 1 0.01 99.53 5122 | 1 0.01 99.54 5390 | 1 0.01 99.55 5980 | 1 0.01 99.56 6011 | 1 0.01 99.57 6310 | 1 0.01 99.58 6501 | 1 0.01 99.59 6561 | 2 0.02 99.61 6720 | 1 0.01 99.62 6740 | 1 0.01 99.63 6816 | 2 0.02 99.65 6909 | 2 0.02 99.67 7024 | 1 0.01 99.68 7499 | 1 0.01 99.69 7779 | 1 0.01 99.70 7932 | 1 0.01 99.71 8060 | 3 0.03 99.74 8086 | 1 0.01 99.75 8191 | 1 0.01 99.76 8363 | 1 0.01 99.77 8519 | 3 0.03 99.80 8628 | 3 0.03 99.83 8630 | 1 0.01 99.84 8669 | 3 0.03 99.87 8670 | 1 0.01 99.88 8845 | 1 0.01 99.89 9716 | 1 0.01 99.90 9789 | 3 0.03 99.93 9923 | 4 0.04 99.97 9924 | 1 0.01 99.98 9929 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016