Summary statistics for rehab_unit_efctv_dt variable in pos2013 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- rehab_u~v_dt | 1,498 2.00e+07 88136.73 1.98e+07 2.01e+07 by Jean Roth , jroth@nber.org , 26 Jan 2016