Summary statistics for e4_c2_28 variable in hcris2552_10_2012 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
    e4_c2_28 |      1,123     .111612     .091355    .000091    .595415

by Jean Roth , jroth@nber.org , 23 Aug 2018