Summary statistics for rehab_unit_efctv_dt variable in pos2016 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- rehab_u~v_dt | 1,539 2.00e+07 94106.22 1.98e+07 2.02e+07 by Jean Roth , jroth@nber.org , 10 Jan 2017