Summary statistics for clia_lab_classification_cd_2 variable in posclia2018 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
clia_lab_c~2 |    407,530    .0338871    .4142464          0         10

by Jean Roth , jroth@nber.org , 15 Feb 2019