Frequencies for first 10,000 rows of ndc variable in nadac dataset : National | Drug Code | (NDC) | Freq. Percent Cum. ------------+----------------------------------- 00002143380 | 159 1.59 1.59 00002143480 | 159 1.59 3.18 00002197590 | 223 2.23 5.41 00002300475 | 78 0.78 6.19 00002322730 | 223 2.23 8.42 00002322830 | 223 2.23 10.65 00002322930 | 223 2.23 12.88 00002323030 | 29 0.29 13.17 00002323130 | 56 0.56 13.73 00002323560 | 142 1.42 15.15 00002323830 | 223 2.23 17.38 00002323930 | 223 2.23 19.61 00002324001 | 145 1.45 21.06 00002324030 | 223 2.23 23.29 00002324033 | 145 1.45 24.74 00002324090 | 223 2.23 26.97 00002325030 | 223 2.23 29.20 00002325130 | 223 2.23 31.43 00002327001 | 88 0.88 32.31 00002327004 | 223 2.23 34.54 00002327030 | 223 2.23 36.77 00002327033 | 88 0.88 37.65 00002411230 | 137 1.37 39.02 00002411530 | 181 1.81 40.83 00002411630 | 57 0.57 41.40 00002411701 | 10 0.10 41.50 00002411704 | 18 0.18 41.68 00002411730 | 209 2.09 43.77 00002411733 | 10 0.10 43.87 00002416502 | 209 2.09 45.96 00002416507 | 205 2.05 48.01 00002416530 | 214 2.14 50.15 00002418402 | 39 0.39 50.54 00002418407 | 35 0.35 50.89 00002418430 | 32 0.32 51.21 00002441501 | 14 0.14 51.35 00002441504 | 23 0.23 51.58 00002441530 | 181 1.81 53.39 00002441533 | 14 0.14 53.53 00002442001 | 14 0.14 53.67 00002442004 | 36 0.36 54.03 00002442030 | 177 1.77 55.80 00002442033 | 14 0.14 55.94 00002445301 | 110 1.10 57.04 00002445385 | 110 1.10 58.14 00002445401 | 117 1.17 59.31 00002445485 | 117 1.17 60.48 00002445501 | 56 0.56 61.04 00002445585 | 56 0.56 61.60 00002445601 | 61 0.61 62.21 00002445685 | 61 0.61 62.82 00002446230 | 223 2.23 65.05 00002446234 | 223 2.23 67.28 00002446279 | 223 2.23 69.51 00002446330 | 223 2.23 71.74 00002446430 | 223 2.23 73.97 00002446534 | 223 2.23 76.20 00002446579 | 223 2.23 78.43 00002477090 | 114 1.14 79.57 00002477190 | 114 1.14 80.71 00002477290 | 114 1.14 81.85 00002512101 | 223 2.23 84.08 00002512130 | 223 2.23 86.31 00002512152 | 223 2.23 88.54 00002512301 | 223 2.23 90.77 00002512330 | 223 2.23 93.00 00002512377 | 223 2.23 95.23 00002751001 | 223 2.23 97.46 00002751017 | 223 2.23 99.69 00002751101 | 31 0.31 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 1 Mar 2018