Summary statistics for rpsr2017q4 dataset : by Jean Roth , jroth@nber.org , 19 Jun 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 15,363 1.42e+08 855800.6 1.40e+08 1.44e+08 caseid | 15,363 1.42e+07 85580.06 1.40e+07 1.44e+07 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 19 Jun 2018