Summary statistics for rpsr2011q3 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 41327 7707121 62804.49 7418981 7941889 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015