Summary statistics for a_c6_9910 variable in prds_hosp10_yr2017 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   a_c6_9910 |          1      -24143           .     -24143     -24143

by Jean Roth , jroth@nber.org , 26 Oct 2018