Summary statistics for adr_vndr_cd variable in snf_rpt2540_10_2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
 adr_vndr_cd |     12,836    3.919601    .2719203          3          4

by Jean Roth , jroth@nber.org , 19 Apr 2018