“…In the nine studies where presenting serum prostate specific antigen (PSA) was added to the MVA [4,5,7,10,11,13,16,17,31], concordance rose to 67%, favoring an effect of volume on outcome. When a measure of surgical margin status or extra-capsular extension of disease was added to the MVA, concordance rose to 75% of the remaining studies [4,5,7,10,11,16,17,31]. Four studies also added a factor of lymph node involvement to the MVA [4,5,7,11]; in them, concordance rose to 75%.…”