Fig. 5. Meta-analysis of use of antifibrinolytic compared with placebo or no treatment on venous thromboembolism. The odds ratio for the individual studies is represented as a  square within a  bar representing the 95% confidence interval (CI). Symbol size is proportional to the study weight. The odds ratio for summaries is represented as a  diamond . The width of the diamonds corresponds to the 95% CI. An odds ratio greater than 1 indicates that the antifibrinolytic is at risk compared with placebo. If the value of 1 is included within the 95% CI, the result is not significant (  P > 0.05). FUT = fibrinogen uptake test; VTE = venous thromboembolism.