Figure 1From: An adaptogenic role for omega-3 fatty acids in stress; a randomised placebo controlled double blind intervention study (pilot) [ISRCTN22569553] A synoptic overview of the research design showing the smaller intervention study nested within the larger cross sectional study. Note: PSS = Perceived Stress Study [11]; VAS = visual analogue scale; OSI-R = Occupational Stress Inventory-Revised [21]; PANAS=Positive and Negative Affect Scales [22].Back to article page