Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 7,309 73.09 73.09 1 | 982 9.82 82.91 100 | 4 0.04 82.95 104 | 1 0.01 82.96 128 | 13 0.13 83.09 134 | 1 0.01 83.10 136 | 1 0.01 83.11 155 | 16 0.16 83.27 165 | 1 0.01 83.28 167 | 6 0.06 83.34 177 | 15 0.15 83.49 187 | 10 0.10 83.59 189 | 3 0.03 83.62 208 | 4 0.04 83.66 220 | 1 0.01 83.67 300 | 4 0.04 83.71 303 | 3 0.03 83.74 304 | 14 0.14 83.88 307 | 1 0.01 83.89 308 | 3 0.03 83.92 310 | 1 0.01 83.93 313 | 1 0.01 83.94 321 | 9 0.09 84.03 326 | 1 0.01 84.04 334 | 1 0.01 84.05 337 | 1 0.01 84.06 342 | 1 0.01 84.07 343 | 3 0.03 84.10 348 | 1 0.01 84.11 351 | 5 0.05 84.16 358 | 1 0.01 84.17 376 | 1 0.01 84.18 387 | 1 0.01 84.19 395 | 1 0.01 84.20 401 | 118 1.18 85.38 402 | 31 0.31 85.69 405 | 3 0.03 85.72 407 | 42 0.42 86.14 410 | 1 0.01 86.15 417 | 56 0.56 86.71 423 | 1 0.01 86.72 513 | 2 0.02 86.74 600 | 19 0.19 86.93 603 | 16 0.16 87.09 605 | 17 0.17 87.26 606 | 22 0.22 87.48 695 | 28 0.28 87.76 702 | 2 0.02 87.78 795 | 1 0.01 87.79 996 | 35 0.35 88.14 997 | 437 4.37 92.51 998 | 7 0.07 92.58 999 | 742 7.42 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016