Summary statistics for reac2015q1 dataset : by Jean Roth , jroth@nber.org , 6 Apr 2017 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 873,189 1.13e+08 7.26e+07 3.50e+07 1.07e+09 caseid | 873,189 1.06e+07 525191.9 3503293 1.12e+07 pt | 0 drug_rec_act | 0 by Jean Roth , jroth@nber.org , 6 Apr 2017