Summary statistics for LPN_LVN_PRTM_CNT variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
LPN_LVN_PR~T |     37,813    1.589586     8.74024          0        723

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