Summary statistics for ful201711 dataset : by Jean Roth , jroth@nber.org , 8 Feb 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- productgroup | 17,725 2953 2230.95 1 11381 ingredient | 0 strength | 0 dosage | 0 route | 0 -------------+--------------------------------------------------------- mdrunittype | 0 weightedav~s | 0 acaful | 17,725 1.354892 3.876493 .003754 79.14149 packagesize | 17,725 239.6444 674.9393 1 28000 ndc | 0 -------------+--------------------------------------------------------- arated | 0 multiplier~o | 0 year | 17,725 2017 0 2017 2017 month | 17,725 11 0 11 11 by Jean Roth , jroth@nber.org , 8 Feb 2018