Summary statistics for mentl_hlth_srvc_prtm_cnt variable in pos2009 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
ment~rtm_cnt |    122,973    .0019699    .1265151          0      29.69

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