Frequencies for first 10,000 rows of drugres1 variable in person dataset : drug test- | result (1) | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,255 62.55 62.55 1 | 2,188 21.88 84.43 100 | 3 0.03 84.46 124 | 1 0.01 84.47 125 | 1 0.01 84.48 128 | 18 0.18 84.66 133 | 1 0.01 84.67 136 | 4 0.04 84.71 148 | 1 0.01 84.72 151 | 9 0.09 84.81 155 | 67 0.67 85.48 157 | 2 0.02 85.50 167 | 21 0.21 85.71 177 | 53 0.53 86.24 178 | 1 0.01 86.25 187 | 26 0.26 86.51 188 | 5 0.05 86.56 189 | 26 0.26 86.82 254 | 1 0.01 86.83 300 | 35 0.35 87.18 303 | 1 0.01 87.19 304 | 65 0.65 87.84 308 | 2 0.02 87.86 313 | 2 0.02 87.88 316 | 5 0.05 87.93 317 | 1 0.01 87.94 321 | 23 0.23 88.17 334 | 1 0.01 88.18 337 | 10 0.10 88.28 343 | 3 0.03 88.31 348 | 21 0.21 88.52 351 | 13 0.13 88.65 352 | 1 0.01 88.66 358 | 2 0.02 88.68 367 | 1 0.01 88.69 376 | 2 0.02 88.71 387 | 6 0.06 88.77 401 | 151 1.51 90.28 402 | 53 0.53 90.81 403 | 8 0.08 90.89 404 | 1 0.01 90.90 405 | 2 0.02 90.92 407 | 34 0.34 91.26 417 | 69 0.69 91.95 423 | 2 0.02 91.97 522 | 1 0.01 91.98 595 | 1 0.01 91.99 600 | 83 0.83 92.82 601 | 1 0.01 92.83 603 | 32 0.32 93.15 605 | 168 1.68 94.83 695 | 102 1.02 95.85 702 | 1 0.01 95.86 996 | 148 1.48 97.34 997 | 138 1.38 98.72 998 | 16 0.16 98.88 999 | 112 1.12 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Oct 2016