Summary statistics for rpsr2008q1 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 47234 5636901 28138.53 5477620 5751747 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015