Summary statistics for a_c6_6910 variable in hosp_rollup2552_96_2004 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   a_c6_6910 |          1       -9151           .      -9151      -9151

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