Summary statistics for rpsr2006q2 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 71397 5013404 24379.84 4873860 5117603 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015