Fig. 14

Meta-analyses on different taxonomic levels and functional groups for insecticide-treated non-Bt maize. A Pyrethroid- and B chloro-nicotinyl-treated non-Bt maize were compared with untreated Bt maize. Records with any red flag in the critical appraisal were excluded. All Bt proteins were included. For each taxon, the effect size estimate and the 95% confidence interval is given (negative effect sizes indicate lower populations in Bt compared with non-Bt maize and vice versa). Significant intervals (red) do not include 0. On the right side is the number of records (rec.), experiments (exp.), and articles (art.) included in each analysis. Het indicates significant heterogeneity