Summary statistics for a7_3_c9_4 variable in hosp_rollup2552_96_2004 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   a7_3_c9_4 |      3,548     2111008     4619229   -1882606   9.10e+07

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