“…Some studies reported probability of outcome occurrence or median survival, leaving 44 studies for final pooling of association effects. Among these 44 studies, 31 [14,15,19,21,23, and 26 [14,22,23,28,30,36,37,39,[42][43][44][45][46][47][48][50][51][52][53][54][55][56][57][58][59][60] assessed association effects of pretreatment serum SCC-Ag on recurrence and death outcomes respectively, while 8 [9,19,[23][24][25]31,61,62] and 4 [23,24,60,62] assessed posttreatment SCC-Ag effects on these corresponding outcomes.…”