Global dose-response meta-analysis of the T2D–GI risk relation. The larger plot shows the mean increment in the log risk relation and 95% CI values. The 95% CI values were based on random effects analysis, the inner (black dashed) lines show the conventional CI values based on (τ2 + σ2) whereas the outer (grey dashed) lines were based on an additional forecasting term, σf2, so that the outer 95% CI was based on (τ2 + σ2 + σf2). Insert: Shows the corresponding unlogged RR (black, continuous), the lower 95% confidence limit when accounting for σf2 (black dashed), and the corresponding log-linear prediction (red).