Summary statistics for clia_lab_classification_cd_2 variable in posclia2016 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
clia_lab_c~2 |    380,009    .0334203    .4111096          0         10

by Jean Roth , jroth@nber.org , 10 Jan 2017