Summary statistics for rehab_unit_efctv_dt variable in pos2015 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- rehab_u~v_dt | 1,508 2.00e+07 92034.47 1.98e+07 2.02e+07 by Jean Roth , jroth@nber.org , 26 Jan 2016