Summary statistics for a_c2_4 variable in hosp_rollup2552_96_2009 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c2_4 |      3,837     2957036     5601022  -1.39e+07   8.03e+07

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