Summary statistics for rpsr2018q1 dataset : by Jean Roth , jroth@nber.org , 19 Jun 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 19,433 1.45e+08 1069294 1.43e+08 1.48e+08 caseid | 19,433 1.45e+07 106929.4 1.43e+07 1.48e+07 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 19 Jun 2018