Summary statistics for MDCTN_AIDE_CNTRCT_CNT variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
MDCTN_~T_CNT |     37,813    .0023846    .0786196          0        9.6

by Jean Roth , jroth@nber.org , 19 Apr 2019