Summary statistics for e4_c2_28 variable in prds_hosp10_yr2013 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
    e4_c2_28 |      1,133    .1194463    .0939583    .000058    .615796

by Jean Roth , jroth@nber.org , 24 Aug 2018