Summary statistics for rpsr2007q3 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 47672 5426161 29626.06 5292285 5530192 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015