Fig. 2

Meta-analysis of studies reporting absolute very heavy and severe impacts per match (n) from microtechnology in rugby union. The forest plot (mean and 95% confidence interval (CI)) presents the results of the meta-analysis of the pooled data estimates for the absolute very heavy and severe impact frequency for a forwards, b backs, c forwards and d backs. The squares and horizontal lines represent individual study mean and 95% CI and the diamond presents the pooled mean and 95% CI. The bigger the square the larger the sample size