Frequencies for first 10,000 rows of drugres3 variable in person dataset : DRUG TEST | RESULTS-3 | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,668 96.68 96.68 1 | 34 0.34 97.02 155 | 2 0.02 97.04 157 | 2 0.02 97.06 167 | 2 0.02 97.08 177 | 2 0.02 97.10 187 | 3 0.03 97.13 189 | 2 0.02 97.15 208 | 1 0.01 97.16 295 | 1 0.01 97.17 300 | 3 0.03 97.20 303 | 1 0.01 97.21 304 | 3 0.03 97.24 308 | 1 0.01 97.25 316 | 5 0.05 97.30 321 | 5 0.05 97.35 337 | 1 0.01 97.36 343 | 2 0.02 97.38 351 | 8 0.08 97.46 352 | 1 0.01 97.47 376 | 2 0.02 97.49 387 | 2 0.02 97.51 401 | 6 0.06 97.57 402 | 5 0.05 97.62 407 | 7 0.07 97.69 410 | 3 0.03 97.72 417 | 9 0.09 97.81 423 | 1 0.01 97.82 513 | 3 0.03 97.85 600 | 1 0.01 97.86 603 | 5 0.05 97.91 605 | 2 0.02 97.93 606 | 22 0.22 98.15 695 | 20 0.20 98.35 795 | 2 0.02 98.37 996 | 46 0.46 98.83 999 | 117 1.17 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016