Figure 3

Blood loss with tetrastarch compared to pentastarch. Units of blood loss were millilitres (ml). The standardised mean difference (Std. mean difference) of the mean for the tetrastarch groups minus the mean for the pentastarch 0.5 group was used as effect size. A fixed-effects model was applied to calculate a common effect estimate using the inverse-variance method (IV). SD, Standard deviation; CI, Confidence interval.