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]; Wallstrm 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 value 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 Wallstrm Long-chain 2007 1.280 1.011 1.621 2.048 0.041 Chavarro Long-chain 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