Summary statistics for d_1_c4_31 variable in snf_rollup2540_96_2006 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   d_1_c4_31 |          2        2002    1691.399        806       3198

by Jean Roth , jroth@nber.org , 17 Feb 2018