Summary statistics for a_c2_20 variable in hosp_rollup2552_96_2009 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c2_20 |        412    264849.4    471458.8    -538965    4512439

by Jean Roth , jroth@nber.org , 21 Apr 2018