Summary statistics for physn_othr_prtm_cnt variable in pos2008 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
p~r_prtm_cnt |    120,282    .0036952    .2904569          0      74.29

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