Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,974 69.74 69.74 1 | 1,230 12.30 82.04 100 | 3 0.03 82.07 128 | 5 0.05 82.12 155 | 2 0.02 82.14 167 | 4 0.04 82.18 177 | 5 0.05 82.23 187 | 8 0.08 82.31 208 | 11 0.11 82.42 300 | 1 0.01 82.43 303 | 1 0.01 82.44 304 | 7 0.07 82.51 306 | 1 0.01 82.52 313 | 2 0.02 82.54 321 | 15 0.15 82.69 325 | 1 0.01 82.70 343 | 2 0.02 82.72 344 | 1 0.01 82.73 348 | 1 0.01 82.74 352 | 1 0.01 82.75 355 | 1 0.01 82.76 358 | 3 0.03 82.79 401 | 41 0.41 83.20 402 | 17 0.17 83.37 405 | 1 0.01 83.38 407 | 26 0.26 83.64 413 | 1 0.01 83.65 417 | 21 0.21 83.86 423 | 1 0.01 83.87 600 | 8 0.08 83.95 603 | 20 0.20 84.15 606 | 10 0.10 84.25 695 | 14 0.14 84.39 702 | 3 0.03 84.42 900 | 2 0.02 84.44 996 | 43 0.43 84.87 997 | 158 1.58 86.45 998 | 1 0.01 86.46 999 | 1,354 13.54 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016