I have two samples with the same variables. I would like to create a combined summary table and compute the difference-in-means with significance. How do I do this?


Code:
* Example generated by -dataex-. For more info, type help dataex
clear
input float(VALUE TVASSETS RELSIZE) int DTC float(HOSTILE TENDER PCT_CASH PCT_STOCK PURECASH PURESTOCK POISON TOEHOLD TTERMFEE DEBT DEBTPCT BIDS PREMIUM)
  9.875         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2     .2255
     21         .            .    0 0 0         1         . 1 0 0 1          .    .        . 2     .3671
    185         .            .  175 0 0     .6973     .3027 0 0 0 1          .    .        . 2      .049
   15.4         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2     .0538
   27.6         .            .  455 0 0         1         . 1 0 0 1          .    .        . 2     .3333
      .         .            .    . 0 0         .         . 0 0 0 .          .    .        . 2         .
  9.084         .            .    8 0 0     .1564     .8436 0 0 0 .          .    .        . 2         .
      .         .            .    . 0 0         .         . 0 1 0 .          .    .        . 2         .
  14.75         .            .   81 1 1         .         . 0 0 0 1          .    .        . 2         .
 56.455         .            .  107 0 0         .         . 0 0 0 1          .    .        . 2         .
    597         .            .    . 1 0         .         1 0 1 0 .          .    .        . 2     .5465
463.691         .            .  252 0 0         .         1 0 1 0 .          .    .        . 2     .4467
   17.2         .            .    . 0 0         .         . 0 1 0 .          .    .        . 2         .
 28.438         .            .  141 0 0         .         . 0 1 0 .          .    .        . 2         .
    143         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2     .5603
  38.52         .            .   90 0 0         1         . 1 0 0 1          .    .        . 2     .7647
   4.45         .            .    0 0 0     .0562     .3596 0 0 0 .          .    .        . 2         .
      .         .            .    . 0 0         .         . 0 0 0 .          .    .        . 2         .
  152.8         .            .    . 1 1         1         . 1 0 1 1          .    .        . 2     .8824
  186.1         .            .   30 0 1         1         . 1 0 0 .  .03224073    .        . 2    1.2353
      .         .            .    . 0 0         .         . 0 0 0 .          .    .        . 2         .
      .         .            .  530 0 0         .     .9744 0 1 0 .          .    .        . 2     .3596
  3.025         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2      .063
    268         .            .  370 0 0         .         . 0 0 0 .          .    .        . 2     .6522
   30.2         .            .    . 0 0 .29799998      .702 0 0 0 .          .    .        . 2         .
   12.6         .            .    0 0 0         .         1 0 1 0 .          .    .        . 2         .
790.075         .            .  207 0 0     .0167     .9833 0 0 0 .          .    .        . 2      .506
 23.034         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2      .025
    225         .            .  218 0 0         1         . 1 0 0 .          .    .        . 2     1.104
   1.22         .            .    . 0 0         1         . 1 0 0 0          .    .        . 2     .0074
     15         .            .    0 0 0         1         . 1 0 0 .          .    .        . 2         .
      .         .            .    . 0 0         .         . 1 0 0 .          .    .        . 2         .
  109.7         .            .    . 0 0     .8368         . 0 0 0 .          . 17.9 .1631723 2     .4118
  106.7         .            .   82 0 0         1         . 1 0 0 .          .    .        . 2     .1475
   1.38         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2     .1346
     50         .            .  403 0 0         1         . 1 0 0 .          .    .        . 2     .5951
    967         .            .  104 0 0         .         . 0 0 0 .          .    .        . 2         .
 55.241         .            .    0 0 0         .         . 0 0 0 .          .    .        . 2         .
      .         .            .    0 0 0         .         . 0 0 0 .          .    .        . 2         .
      .         .            .    . 0 0         .         . 0 0 0 .          .    .        . 2         .
  37.66         .            . 1154 0 0         .         1 0 1 0 .          .    .        . 2     .0756
   44.8         .            .    . 1 1         1         . 1 0 0 .          .    .        . 2       .28
      .         .            .  118 0 1         .         . 0 0 0 .          .    .        . 2         .
  7.849         .            .   51 0 0         .         . 0 0 0 1          .    .        . 2         .
    452         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2     .2121
  576.9         .            .  120 0 0         .         1 0 1 0 .          .    .        . 2 .52459997
     70         .            .  153 0 0         .     .4114 0 0 0 .          .    .        . 2     .1789
      .         .            .    0 0 0         .         . 1 0 0 .          .    .        . 2         .
      .         .            .    . 0 0         .         . 0 0 0 .          .    .        . 2         .
      .         .            .   75 0 0         .         1 0 1 0 .          .    .        . 2         .
145.153         .    1.9177935   43 0 1         1         . 1 0 0 .  .03272409    .        . 2     .6603
    5.5         .    .05178323    . 0 0         1         . 1 0 0 .          .    .        . 2     .1066
 102.92         .            .  149 0 0     .8251         . 1 0 0 .          .    .        . 2         .
   97.1         .            .    . 0 0     .8146         . 1 0 0 .          .    .        . 2         .
      .         .            .  743 0 0         .         . 0 0 0 .          .    .        . 2         .
    100         .            .    . 0 0         .         . 0 0 0 .          .    .        . 2         .
      .         .            .    . 1 0         .         . 0 0 1 0          .    .        . 2         .
    9.9         .            .   88 0 0         .         . 0 0 0 .          .    .        . 2         1
      .         .            .    . 0 0         .         . 0 1 0 .          .    .        . 2         .
      .         .            .  113 0 1         .         . 0 0 0 .          .    .        . 2         .
  10.47         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2     .6571
      .         .            . 1128 0 0         .         . 0 0 0 .          .    .        . 2         .
    210         .            .    . 0 0         .         . 0 0 0 .          .    .        . 2         .
136.493         .            .  235 0 1         1         . 1 0 0 1          .    .        . 2     .9955
      .         .            .    . 0 0         .         . 0 0 0 .          .    .        . 2         .
   48.1         .            .   80 0 1         1         . 1 0 0 .          .    .        . 2         .
  22.77         .            .   74 1 1         1         . 1 0 0 0          .    .        . 2     .8589
244.554         .            .  157 0 1      .276      .724 0 0 0 .  .01226723    .        . 2     1.127
      .         .            .  133 0 0         .         1 0 1 0 .          .    .        . 2     .3456
613.125         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2     .0283
      .         .            .    . 0 0         .         . 1 0 0 .          .    .        . 2         .
     46         .            .  407 0 0         1         . 1 0 0 .          .    .        . 2     .2075
827.153         .    .22340944  293 0 0         .      .295 0 0 0 . .036268983    .        . 2     .1035
     50         .     .0886088    . 0 0         1         . 1 0 0 .          .    .        . 2         .
  39.81         .            .    1 0 0         1         . 1 0 0 1          .    .        . 2      .112
      .         .            .  254 0 0         .         . 0 0 0 1          .    .        . 2     .8857
117.277         .            .   34 0 1         1         . 1 0 0 .          .    .        . 2     1.256
440.075         .            .    . 0 1     .2337         . 1 0 0 . .018178718    .        . 2       .92
359.233         .            .   35 0 1     .9165         . 1 0 0 .  .02505338    .        . 2     .2464
 13.261         .            .    0 0 0         1         . 1 0 0 0          .    .        . 2     .1682
      .         .            .  133 0 0         .         1 0 1 0 .          .    .        . 2     .3011
    300         .            .    . 0 0         1         . 1 0 0 .          .    .        . 2         .
    260         .            .  121 0 1         1         . 1 0 0 .  .03846154    .        . 2     .6667
    173         .            .    . 1 0     .0419     .9581 0 0 0 1          .    .        . 2     .0986
 18.214         .            .  385 0 0         .         . 0 0 0 .          .    .        . 2         .
      .         .            .    0 0 0         .         . 1 0 0 .          .    .        . 2         .
      .         .            .    0 0 0         .         . 0 0 0 .          .    .        . 2         .
  47.25         .            .    . 0 0         .         1 0 1 0 .          .    .        . 2         .
  19.25 .04866041    .04866041    . 0 0         1         . 1 0 0 .          .    .        . 2     .1047
  408.6         .    .10972318   43 0 1         1         . 1 0 0 .  .03426334    .        . 2     .7656
      .         .            .    . 0 0         .         . 1 0 0 .          .    .        . 2         .
 218.38         .            .  243 1 1      .668         . 0 0 0 0          .    .        . 2      .617
     50         .            .  119 0 0         1         . 1 0 0 .          .    .        . 2  .7187999
      .         .            .    . 0 0         .         . 1 0 0 .          .    .        . 2         .
   38.1         .            .  165 0 0         1         . 1 0 0 .          .    .        . 2     .9556
    1.2         .            .    0 0 0         1         . 1 0 0 1          .    .        . 2     .0609
      .         .            .    . 0 0         .         . 1 0 0 .          .    .        . 2         .
   42.6         .            .  130 1 1         1         . 1 0 1 .          .    .        . 2     .8378
590.177         .            .  122 0 0         . .52900004 0 0 0 . .020332884    .        . 2     .3597
  6.763         . .00006027996    0 0 0         1         . 1 0 0 .          .    .        . 2     .1547
end