Frequencies for first 10,000 rows of drug_seq variable in drug2016q1 dataset : Unique | number for | identifying | a drug for | a Case | Freq. Percent Cum. ------------+----------------------------------- 1 | 1,804 18.04 18.04 2 | 1,328 13.28 31.32 3 | 1,054 10.54 41.86 4 | 836 8.36 50.22 5 | 663 6.63 56.85 6 | 557 5.57 62.42 7 | 483 4.83 67.25 8 | 420 4.20 71.45 9 | 341 3.41 74.86 10 | 287 2.87 77.73 11 | 242 2.42 80.15 12 | 210 2.10 82.25 13 | 182 1.82 84.07 14 | 160 1.60 85.67 15 | 139 1.39 87.06 16 | 126 1.26 88.32 17 | 111 1.11 89.43 18 | 97 0.97 90.40 19 | 94 0.94 91.34 20 | 84 0.84 92.18 21 | 76 0.76 92.94 22 | 67 0.67 93.61 23 | 61 0.61 94.22 24 | 51 0.51 94.73 25 | 45 0.45 95.18 26 | 42 0.42 95.60 27 | 40 0.40 96.00 28 | 37 0.37 96.37 29 | 34 0.34 96.71 30 | 32 0.32 97.03 31 | 29 0.29 97.32 32 | 26 0.26 97.58 33 | 25 0.25 97.83 34 | 23 0.23 98.06 35 | 21 0.21 98.27 36 | 18 0.18 98.45 37 | 14 0.14 98.59 38 | 12 0.12 98.71 39 | 11 0.11 98.82 40 | 10 0.10 98.92 41 | 10 0.10 99.02 42 | 10 0.10 99.12 43 | 8 0.08 99.20 44 | 8 0.08 99.28 45 | 6 0.06 99.34 46 | 6 0.06 99.40 47 | 6 0.06 99.46 48 | 5 0.05 99.51 49 | 5 0.05 99.56 50 | 5 0.05 99.61 51 | 5 0.05 99.66 52 | 4 0.04 99.70 53 | 3 0.03 99.73 54 | 3 0.03 99.76 55 | 3 0.03 99.79 56 | 2 0.02 99.81 57 | 2 0.02 99.83 58 | 2 0.02 99.85 59 | 2 0.02 99.87 60 | 2 0.02 99.89 61 | 2 0.02 99.91 62 | 2 0.02 99.93 63 | 1 0.01 99.94 64 | 1 0.01 99.95 65 | 1 0.01 99.96 66 | 1 0.01 99.97 67 | 1 0.01 99.98 68 | 1 0.01 99.99 69 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 6 Apr 2017