Summary statistics for impact1989 dataset :

by Jean Roth , jroth@nber.org , 17 Mar 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
    provider |          0
       fyear |      4,382        1989           0       1989       1989
      tacmiv |      4,382    1.200297    .1794005      .6316     2.2782
   wageindex |      4,382    1.093223      .18542   .8203139   1.746313
       ppsid |      4,382      259058    147621.5      10001     530032
-------------+---------------------------------------------------------
      caseta |          0
  sum_rltwts |          0

by Jean Roth , jroth@nber.org , 17 Mar 2016