Summary statistics for mdcl_scl_workr_vlntr_cnt variable in pos2018 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdcl_~tr_cnt |      6,776    .0589743    1.001163          0         69

by Jean Roth , jroth@nber.org , 15 Feb 2019