Summary statistics for outc2016q4 dataset : by Jean Roth , jroth@nber.org , 18 Sep 2017 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 220,841 1.36e+08 9.06e+07 4.08e+07 1.29e+09 caseid | 220,841 1.27e+07 617653.6 4083807 1.31e+07 outc_cod | 0 by Jean Roth , jroth@nber.org , 18 Sep 2017