Summary statistics for statelic dataset : by Jean Roth , jroth@nber.org , 19 Apr 2019 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- npi | 0 seq | 5,221,515 1.286688 .8313146 1 15 plicnum | 0 plicstate | 0 by Jean Roth , jroth@nber.org , 19 Apr 2019