Summary statistics for adr_vndr_cd variable in snf_rpt2540_96_1999 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
 adr_vndr_cd |     12,778    3.440131    .6020172          2          4

by Jean Roth , jroth@nber.org , 17 Feb 2018