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Forest plot of the effect size for marine oil interventions on pain. Weights are shown for both a random-effects model (“W(random)”) and a fixed-effects model (“W(fixed)”). 95% CI: 95% confidence interval; MO: marine oil; SMD: standardized mean differences. Note that the use of the term MO refers to all oils of marine origin (e.g., oil from whole fish and mussel oil).
