Summary statistics for PHYSN_EXT_CNTRCT_CNT variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
PHYSN_EXT_C~ |     37,813    .0626068    .3505729          0      42.86

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