Figure 4. Meta-Regression of Effect Size of Omega-3 Fatty Acids versus Trial Duration
Trials of shorter duration tended to show a greater efficacy of omega-3 fatty acid. The size of the circle representing each trial is proportional to its weighting on the overall analysis (β=-0.11 ± 0.04, 95%CI: (-0.20, -0.01), p=0.028, R2=0.37). Trials were weighted using the generic inverse variance method.