Summary statistics for rpsr2008q3 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 43656 5856053 34512.42 5701501 5929917 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015