Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,816 68.16 68.16 1 | 1,319 13.19 81.35 100 | 8 0.08 81.43 115 | 1 0.01 81.44 128 | 6 0.06 81.50 139 | 1 0.01 81.51 144 | 1 0.01 81.52 151 | 3 0.03 81.55 155 | 10 0.10 81.65 157 | 2 0.02 81.67 165 | 2 0.02 81.69 167 | 2 0.02 81.71 177 | 5 0.05 81.76 187 | 9 0.09 81.85 189 | 4 0.04 81.89 208 | 4 0.04 81.93 295 | 2 0.02 81.95 300 | 3 0.03 81.98 303 | 4 0.04 82.02 304 | 12 0.12 82.14 308 | 2 0.02 82.16 313 | 1 0.01 82.17 321 | 10 0.10 82.27 334 | 1 0.01 82.28 348 | 14 0.14 82.42 351 | 1 0.01 82.43 358 | 2 0.02 82.45 367 | 2 0.02 82.47 376 | 2 0.02 82.49 387 | 1 0.01 82.50 401 | 100 1.00 83.50 402 | 41 0.41 83.91 405 | 4 0.04 83.95 407 | 28 0.28 84.23 417 | 57 0.57 84.80 418 | 1 0.01 84.81 423 | 2 0.02 84.83 495 | 1 0.01 84.84 600 | 5 0.05 84.89 603 | 20 0.20 85.09 605 | 3 0.03 85.12 606 | 15 0.15 85.27 695 | 16 0.16 85.43 702 | 1 0.01 85.44 996 | 79 0.79 86.23 997 | 194 1.94 88.17 998 | 4 0.04 88.21 999 | 1,179 11.79 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016