Summary statistics for a7_3_c9_4 variable in hosp_rollup2552_96_2007 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   a7_3_c9_4 |      5,411     3131574     5809780   -2722588   1.02e+08

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