Summary statistics for a_c1_20 variable in prds_hosp10_yr2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c1_20 |        141     2147129     3223056       1976   2.71e+07

by Jean Roth , jroth@nber.org , 24 Aug 2018