Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,935 69.35 69.35 1 | 1,072 10.72 80.07 100 | 6 0.06 80.13 114 | 1 0.01 80.14 125 | 1 0.01 80.15 128 | 6 0.06 80.21 155 | 16 0.16 80.37 165 | 1 0.01 80.38 167 | 6 0.06 80.44 177 | 11 0.11 80.55 187 | 7 0.07 80.62 189 | 2 0.02 80.64 208 | 4 0.04 80.68 229 | 1 0.01 80.69 295 | 4 0.04 80.73 300 | 4 0.04 80.77 302 | 1 0.01 80.78 303 | 3 0.03 80.81 304 | 15 0.15 80.96 308 | 1 0.01 80.97 321 | 10 0.10 81.07 333 | 1 0.01 81.08 334 | 1 0.01 81.09 348 | 24 0.24 81.33 351 | 2 0.02 81.35 376 | 4 0.04 81.39 387 | 1 0.01 81.40 395 | 1 0.01 81.41 401 | 87 0.87 82.28 402 | 43 0.43 82.71 404 | 1 0.01 82.72 405 | 1 0.01 82.73 407 | 19 0.19 82.92 417 | 44 0.44 83.36 513 | 1 0.01 83.37 600 | 9 0.09 83.46 603 | 23 0.23 83.69 605 | 9 0.09 83.78 606 | 12 0.12 83.90 695 | 22 0.22 84.12 702 | 2 0.02 84.14 904 | 1 0.01 84.15 996 | 60 0.60 84.75 997 | 402 4.02 88.77 998 | 4 0.04 88.81 999 | 1,119 11.19 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016