From: Fish consumption and risk of stroke: a second prospective case-control study from northern Sweden
Previous study (Wennberg et al. 2007 [8]) | Present study | |
---|---|---|
Baseline | 1986–1999 | 1986–2005 |
Number of cases/controls | 369/738 | 735/2698 |
Cases diagnos year | 1986–2000 | 1987–2007 |
Exclusions | any stroke, MI or cancer before baseline | any stroke before baseline, inclusion as case in the previous study |
Fish consumption data | FFQ data; lean and fatty fish, blood concentrations of EPA, DHA and mercury | FFQ data; lean and fatty fish |
Adjustment variables | Smoking, hypertension, serum-cholesterol, diabetes diagnosis, BMI, education | All in the previous study and alcohol consumption, consumption of fruit and vegetables, level of physical activity, civil status |