Summary statistics for mdcl_scl_workr_vlntr_cnt variable in pos1991 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdcl_~tr_cnt |     81,041     .001798    .0991771          0         22

by Jean Roth , jroth@nber.org , 17 May 2017