Summary statistics for phone variable in dbo_vwhqi_hosp dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       phone |      4,822    5.84e+09    2.33e+09   9.37e+08   9.90e+09

by Jean Roth , jroth@nber.org , 16 Nov 2016