Summary statistics for rpsr2007q1 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 58908 5256469 31522.28 5121401 5337807 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015