Mean (Standard Error) of fish consumption and the intake of polyunsaturated fatty acids (PUFAs) by sex and occurrence of depressive episodes during the previous 12 months1 in the Health 2000 Survey and in the Fishermen Study.

FFQ = Food Frequency Questionnaire.1In the Health 2000 Survey, major depressive episodes (MDE) measured by a Finnish translation of the German, computerized version of the M-CIDI interview with DSM-IV[10] sub-threshold cases included. In the Fishermen Study, depressive episodes measured by the CIDI-SF stem questions ‘During the previous 12 months, have you felt sad, blue or depressed for at least 2 weeks?’ and ‘During the previous 12 months, have you lost interest in most things like work or hobbies or things you usually like to do for fun for at least two weeks?[16]. A person was considered to have depressive episodes if she/he answered ‘yes’ to both questions.2Eicosapentaenoic acid.3Docosahexaenoic acid.4Arachidonic acid.5Docosapentaenoic acid.