Summary statistics for a_c6_9 variable in hosp_rollup2552_96_2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c6_9 |          2       21929    39073.31      -5700      49558

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