Summary statistics for rpsr2014q4 dataset : by Jean Roth , jroth@nber.org , 6 Apr 2017 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 23,348 1.06e+08 1.67e+07 5.76e+07 1.02e+09 caseid | 23,348 1.06e+07 233893.9 5759625 1.10e+07 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 6 Apr 2017