Summary statistics for rpsr2015q4 dataset : by Jean Roth , jroth@nber.org , 6 Apr 2017 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 5,691 1.17e+08 1195824 9.78e+07 1.19e+08 caseid | 5,691 1.17e+07 119582.4 9783194 1.19e+07 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 6 Apr 2017