Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,493 64.93 64.93 1 | 1,326 13.26 78.19 100 | 4 0.04 78.23 101 | 15 0.15 78.38 128 | 7 0.07 78.45 147 | 1 0.01 78.46 151 | 1 0.01 78.47 155 | 10 0.10 78.57 165 | 1 0.01 78.58 167 | 8 0.08 78.66 172 | 1 0.01 78.67 177 | 12 0.12 78.79 187 | 7 0.07 78.86 189 | 2 0.02 78.88 208 | 8 0.08 78.96 295 | 5 0.05 79.01 300 | 3 0.03 79.04 303 | 5 0.05 79.09 304 | 12 0.12 79.21 308 | 4 0.04 79.25 309 | 1 0.01 79.26 321 | 15 0.15 79.41 334 | 1 0.01 79.42 343 | 3 0.03 79.45 348 | 13 0.13 79.58 351 | 4 0.04 79.62 358 | 1 0.01 79.63 376 | 2 0.02 79.65 377 | 2 0.02 79.67 401 | 93 0.93 80.60 402 | 47 0.47 81.07 407 | 28 0.28 81.35 410 | 1 0.01 81.36 417 | 53 0.53 81.89 422 | 1 0.01 81.90 423 | 1 0.01 81.91 513 | 1 0.01 81.92 522 | 2 0.02 81.94 600 | 12 0.12 82.06 603 | 16 0.16 82.22 606 | 14 0.14 82.36 695 | 17 0.17 82.53 702 | 3 0.03 82.56 810 | 1 0.01 82.57 996 | 109 1.09 83.66 997 | 447 4.47 88.13 998 | 1 0.01 88.14 999 | 1,186 11.86 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016