Summary statistics for PDTRST_CNTRCT_CNT variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
PDTRST_CNT~T |     37,813    .0634287    5.150216          0     999.99

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