Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,878 68.78 68.78 1 | 1,631 16.31 85.09 100 | 4 0.04 85.13 115 | 1 0.01 85.14 118 | 1 0.01 85.15 128 | 9 0.09 85.24 136 | 4 0.04 85.28 151 | 3 0.03 85.31 155 | 26 0.26 85.57 157 | 1 0.01 85.58 165 | 1 0.01 85.59 167 | 8 0.08 85.67 177 | 21 0.21 85.88 187 | 17 0.17 86.05 188 | 4 0.04 86.09 189 | 12 0.12 86.21 196 | 2 0.02 86.23 208 | 6 0.06 86.29 295 | 2 0.02 86.31 300 | 11 0.11 86.42 301 | 1 0.01 86.43 303 | 6 0.06 86.49 304 | 42 0.42 86.91 313 | 2 0.02 86.93 316 | 2 0.02 86.95 321 | 14 0.14 87.09 329 | 1 0.01 87.10 334 | 1 0.01 87.11 337 | 2 0.02 87.13 340 | 1 0.01 87.14 343 | 4 0.04 87.18 348 | 10 0.10 87.28 351 | 4 0.04 87.32 352 | 3 0.03 87.35 355 | 1 0.01 87.36 358 | 2 0.02 87.38 376 | 1 0.01 87.39 387 | 3 0.03 87.42 401 | 112 1.12 88.54 402 | 56 0.56 89.10 407 | 31 0.31 89.41 410 | 1 0.01 89.42 417 | 24 0.24 89.66 419 | 1 0.01 89.67 423 | 1 0.01 89.68 513 | 3 0.03 89.71 515 | 1 0.01 89.72 600 | 19 0.19 89.91 603 | 25 0.25 90.16 605 | 30 0.30 90.46 606 | 66 0.66 91.12 695 | 88 0.88 92.00 996 | 75 0.75 92.75 997 | 629 6.29 99.04 999 | 96 0.96 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016