Summary statistics for rpsr2012q2 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 40127 8408713 78418.88 8024929 8618487 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015