Summary statistics for patientthru2014 dataset :

by Jean Roth , jroth@nber.org , 2 Mar 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdr_report~y |  4,086,480     2227896     1273389         10    4376478
patient_se~r |          0
date_recei~d |  1,744,051    18334.49    1710.839      11693      20069
date_recei~r |          0
sequence_n~t |          0
-------------+---------------------------------------------------------
sequence_n~e |          0

by Jean Roth , jroth@nber.org , 2 Mar 2016