Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,585 65.85 65.85 1 | 1,946 19.46 85.31 100 | 2 0.02 85.33 128 | 11 0.11 85.44 136 | 4 0.04 85.48 144 | 1 0.01 85.49 151 | 3 0.03 85.52 155 | 39 0.39 85.91 157 | 3 0.03 85.94 167 | 15 0.15 86.09 177 | 17 0.17 86.26 181 | 1 0.01 86.27 187 | 27 0.27 86.54 188 | 4 0.04 86.58 189 | 13 0.13 86.71 197 | 1 0.01 86.72 208 | 2 0.02 86.74 295 | 1 0.01 86.75 300 | 8 0.08 86.83 303 | 1 0.01 86.84 304 | 68 0.68 87.52 308 | 3 0.03 87.55 313 | 1 0.01 87.56 316 | 1 0.01 87.57 321 | 12 0.12 87.69 337 | 5 0.05 87.74 343 | 1 0.01 87.75 348 | 14 0.14 87.89 351 | 8 0.08 87.97 352 | 1 0.01 87.98 367 | 2 0.02 88.00 376 | 3 0.03 88.03 387 | 4 0.04 88.07 401 | 117 1.17 89.24 402 | 54 0.54 89.78 403 | 1 0.01 89.79 405 | 1 0.01 89.80 407 | 24 0.24 90.04 414 | 1 0.01 90.05 417 | 56 0.56 90.61 513 | 3 0.03 90.64 600 | 29 0.29 90.93 601 | 2 0.02 90.95 602 | 1 0.01 90.96 603 | 37 0.37 91.33 605 | 38 0.38 91.71 606 | 61 0.61 92.32 695 | 92 0.92 93.24 702 | 1 0.01 93.25 940 | 1 0.01 93.26 996 | 82 0.82 94.08 997 | 459 4.59 98.67 998 | 20 0.20 98.87 999 | 113 1.13 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016