Summary statistics for patientthru2017 dataset :

by Jean Roth , jroth@nber.org , 

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdr_report~y |  6,859,697     3655428     2057862         10    7156368
patient_se~r |          0
date_recei~d |  2,884,565    19233.71    1753.793      11693      21165
date_recei~r |          0
sequence_n~t |          0
-------------+---------------------------------------------------------
sequence_n~e |          0

by Jean Roth , jroth@nber.org ,