Summary statistics for actvty_stf_othr_cntrct_cnt variable in pos2017 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
actvty_stf.. |     38,839    .0179037    .3487364          0         32

by Jean Roth , jroth@nber.org , 9 Jan 2018