Summary statistics for rpsr2015q1 dataset : by Jean Roth , jroth@nber.org , 6 Apr 2017 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 28,245 1.08e+08 1.01e+07 4.11e+07 9.96e+08 caseid | 28,245 1.08e+07 319603.8 3759885 1.12e+07 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 6 Apr 2017