Figure 1.

Galbraith plots of the meta-analyses of the incidence of the four pathogens in poultry meat surveyed at the end-processing stage and at retail establishments in Europe; Campylobacter spp. overall prevalence 33.3%; 95% CI: 22.3–46.4% (A); L. monocytogenes overall prevalence 19.3%; 95% CI: 14.4–25.3% (B); Salmonella spp. overall prevalence 7.10%; 95% CI: 4.60–10.8% (C); S. aureus overall prevalence 38.5%; 95% CI: 25.4–53.4% (D).For each observation i, y_i denotes the logit-transformed incidence; v_i the sampling variance; τ² the between-study variance; x_i the incidence value’s precision; and z_i, the standardized logit-transformed incidence