Summary statistics for rpsr2012q3 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 11095 8561726 36719.04 8494100 8624716 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015