Methods. Per-study risk ratio with continuity correction for zero cells.
Random-effects model uses DerSimonian–Laird τ². Heterogeneity assessed via Cochran's Q and I².
Diamond width = 95% CI of the pooled estimate. Square size ∝ study weight.
Forest plot
Risk ratio (PUFA / Control) with 95% CI. RR < 1 favors PUFA.
Pooled estimate
Switch model with the dropdown above.
Event rates by arm
Crude event rate per study (% of arm with the event).
Study weight (random-effects)
Larger studies with smaller within-study variance carry more weight.