Table 3. Odds ratios of Type 2 diabetes in relation to intake of fatty fish, EPA and DHA and supplementation of vitamin D and fish oil.

	Model 1			Model 2			Model 3
	Cases/controls	OR	95% CI	Cases/controls	OR	95% CI	Cases/controls	OR	95% CI
Fatty fish
<1 serving per week	173/388	1		157/362	1		157/362
1–2 servings per week	168/365	0.95	0.72–1.24	157/342	1.10	0.78–1.54	157/342	1.04	0.73–1.46
>2 servings per week	121/254	0.91	0.68–1.23	117/244	1.08	0.74–1.58	117/244	0.97	0.65–1.45
⩾1 serving per week	289/619	0.93	0.73–1.19	274/586	1.09	0.80–1.48	274/586	1.01	0.74–1.39
Total EPA+DHA from seafood
<0.3 g per day	130/303	1.0		116/281			116/281
0.3–0.6 g per day	176/368	1.08	0.81–1.44	166/345	1.22	0.85–1.77	166/345	1.17	0.81–1.71
>0.6 g per day	156/336	0.98	0.73–1.32	149/322	1.16	0.79–1.70	149/322	1.03	0.68–1.55
⩾0.3 g per day	332/704	1.03	0.80–1.33	315/667	1.19	0.85–1.67	315/667	1.14	0.79–1.58
Fish oil supplementation
Never	374/841	1		347/795	1		347/795	1
Ever	88/166	1.28	0.94–1.73	84/153	1.63	1.12–2.39	84/153	1.58	1.08–2.31
Vitamin D supplementation
Never	440/924	1.0		410/875	1.0		410/875	1.0
Ever	22/83	0.79	0.44–1.43	21/73	0.79	0.41–1.50	21/73	0.75	0.39–1.43
Vitamin D or/and fish oil
Never	365/800	1		97/207	1		97/207	1
Ever	97/207	1.01	0.82–1.47	93/191	1.40	0.97–2.01	93/191	1.35	0.93–1.94

Abbreviations: CI, confidence intervals; DHA, docosahexaenoic acid; EPA, eicosapentaenoic acid; LADA latent autoimmune diabetes in adults; OR, Odds ratios.

Model 1. Adjusted for age and gender

Model 2. Adjusted for age, gender, BMI, smoking, education, physical activity, family history of diabetes and alcohol intake

Model 3. Adjusted for age, gender, BMI, smoking, education, physical activity, family history of diabetes, and intake of alcohol, fruit and vegetables, and meat.