Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,680 66.80 66.80 1 | 1,343 13.43 80.23 100 | 1 0.01 80.24 101 | 1 0.01 80.25 117 | 1 0.01 80.26 128 | 9 0.09 80.35 155 | 6 0.06 80.41 165 | 1 0.01 80.42 167 | 5 0.05 80.47 173 | 1 0.01 80.48 177 | 31 0.31 80.79 187 | 6 0.06 80.85 300 | 1 0.01 80.86 304 | 9 0.09 80.95 307 | 2 0.02 80.97 308 | 1 0.01 80.98 313 | 1 0.01 80.99 321 | 8 0.08 81.07 334 | 2 0.02 81.09 343 | 1 0.01 81.10 348 | 8 0.08 81.18 351 | 1 0.01 81.19 355 | 1 0.01 81.20 358 | 3 0.03 81.23 376 | 2 0.02 81.25 401 | 62 0.62 81.87 402 | 44 0.44 82.31 404 | 2 0.02 82.33 407 | 46 0.46 82.79 410 | 1 0.01 82.80 417 | 27 0.27 83.07 421 | 1 0.01 83.08 422 | 1 0.01 83.09 423 | 1 0.01 83.10 513 | 3 0.03 83.13 600 | 3 0.03 83.16 603 | 14 0.14 83.30 606 | 11 0.11 83.41 695 | 9 0.09 83.50 702 | 3 0.03 83.53 996 | 65 0.65 84.18 997 | 133 1.33 85.51 998 | 2 0.02 85.53 999 | 1,447 14.47 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016