Summary statistics for s3_1_c21_3 variable in snf_rollup2540_96_1996 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
  s3_1_c21_3 |      7,151    78.86016    82.87197          1       1759

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