Summary statistics for a_c6_21 variable in hosp_rollup2552_96_1997 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c6_21 |        270   -343116.2     1154115   -9859878    6137982

by Jean Roth , jroth@nber.org , 5 Sep 2018