Adjusted1 odds ratios with 95% confidence intervals (95% CI) for occurrence of major depressive episode during the previous 12 months2 by quartiles of fish consumption (1st quartile as a reference) stratified by alcohol consumption tertiles3, smoking and physical activity in the Health 2000 Survey.

1

Adjusted for age as continuous, total energy intake as continuous, level of education, marital status, smoking history, physical activity, alcohol intake (ethanol, g/day) as continuous, Body Mass Index as continuous, fish oil supplement use, current medication for depression or psychiatric disorders, occurrence of severe illness, bronchial asthma, or back pain or illness.

2

A Finnish translation of the German, computerized version of the M-CIDI interview with DSM-IV[10] sub-threshold cases included.

3

Mean (Standard Error): In men: 1st tertile 0.7 (0.03), 2nd tertile 4.6 (0.1), 3rd tertile 18 (1.0), In women: 1st tertile 0.1 (0.004), 2nd tertile 1.6 (0.02), 3rd tertile 7.4 (0.2).