Summary statistics for rpsr2013q1 dataset : by Jean Roth , jroth@nber.org , 7 Apr 2017 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 54,143 9.21e+07 6951193 3.70e+07 8.39e+08 caseid | 54,143 9208063 284112.8 3700518 9819975 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 7 Apr 2017