Frequencies for first 10,000 rows of drugres1 variable in person dataset : DRUG TEST | RESULTS-1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,699 66.99 66.99 1 | 1,316 13.16 80.15 100 | 1 0.01 80.16 128 | 9 0.09 80.25 155 | 11 0.11 80.36 165 | 4 0.04 80.40 167 | 3 0.03 80.43 177 | 17 0.17 80.60 187 | 14 0.14 80.74 189 | 4 0.04 80.78 208 | 7 0.07 80.85 300 | 2 0.02 80.87 303 | 1 0.01 80.88 304 | 6 0.06 80.94 308 | 1 0.01 80.95 320 | 1 0.01 80.96 321 | 10 0.10 81.06 343 | 1 0.01 81.07 348 | 4 0.04 81.11 351 | 2 0.02 81.13 358 | 5 0.05 81.18 376 | 4 0.04 81.22 377 | 1 0.01 81.23 395 | 1 0.01 81.24 400 | 1 0.01 81.25 401 | 89 0.89 82.14 402 | 60 0.60 82.74 405 | 1 0.01 82.75 407 | 38 0.38 83.13 410 | 1 0.01 83.14 417 | 41 0.41 83.55 513 | 1 0.01 83.56 600 | 10 0.10 83.66 603 | 15 0.15 83.81 606 | 8 0.08 83.89 695 | 31 0.31 84.20 702 | 2 0.02 84.22 900 | 2 0.02 84.24 996 | 68 0.68 84.92 997 | 143 1.43 86.35 998 | 3 0.03 86.38 999 | 1,362 13.62 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016