Fig. 2.

(colour online) Forest plots showing the pooled risk ratio (RR) of depression for the highest v. the lowest category of dietary inflammatory index (DII^®) score according to study design. The study-specific RR and 95 % CI are represented by the black diamond and the horizontal line, respectively; the area of the grey square is proportional to the specific-study weight to the overall meta-analysis. The centre of the blue open diamond and the red dashed vertical line represent the pooled RR; and the width of the blue open diamond represents the pooled 95 % CI