trial author                 year tpos  tneg cpos  cneg ablat      alloc
1     "Aronson"              1948    4   119   11   128    44     random
2     "Ferguson & Simes"     1949    6   300   29   274    55     random
3     "Rosenthal et al"      1960    3   228   11   209    42     random
4     "Hart & Sutherland"    1977   62 13536  248 12619    52     random
5     "Frimodt-Moller et al" 1973   33  5036   47  5761    13  alternate
6     "Stein & Aronson"      1953  180  1361  372  1079    44  alternate
7     "Vandiviere et al"     1973    8  2537   10   619    19     random
8     "TPT Madras"           1980  505 87886  499 87892    13     random
9     "Coetzee & Berjak"     1968   29  7470   45  7232    27     random
10    "Rosenthal et al"      1961   17  1699   65  1600    42 systematic
11    "Comstock et al"       1974  186 50448  141 27197    18 systematic
12    "Comstock & Webster"   1969    5  2493    3  2338    33 systematic
13    "Comstock et al"       1976   27 16886   29 17825    33 systematic
