Summary statistics for c_1_c7_40 variable in hosp_rollup2552_96_2007 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   c_1_c7_40 |      3,651     4204640     9139511          1   1.70e+08

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