Relationship of Dietary Intake of Omega-3 and Omega-6 Fatty Acids with Risk of Prostate Cancer Development: A Meta-Analysis of Prospective Studies and Review of Literature

Table 4

Forest plot of dietary long-chain omega-3 fatty acid intake and total incidence of prostate cancer (Schuurman et al. [9]; Park et al. [15]; Wallström et al. [16]; Chavarro et al. [17]).

Study name	Subgroup within study	Time point	Statistics for each study					Risk ratio and 95% Cl
			Rick ratio	Lower limit	Upper limit	𝑍 value	𝑃 value
Schuurman	DHA	1999	1.030	0.754	1.407	0.186	0.853
Park	DHA	2007	0.990	0.895	1.096	−0.194	0.846
			0.994	0.902	1.094	−0.128	0.899
Schuurman	EPA	1999	1.000	0.735	1.360	0.000	1.000
Park	EPA	2007	1.010	0.906	1.125	0.180	0.857
			1.009	0.911	1.117	0.170	0.865
Wallström	Long-chain 𝑛-3	2007	1.280	1.011	1.621	2.048	0.041
Chavarro	Long-chain 𝑛-3	2008	1.090	0.950	1.250	1.231	0.218
			1.135	1.008	1.278	2.093	0.036
			1.034	0.973	1.098	1.085	0.278