TABLE 2.

Associations between dietary n – 3 PUFAs and breast cancer risk^a.

	Cases/Controls	Crude-OR (95% CI)	P-trend	Adjusted-OR (95% CI)	P-trend
Dietary ALA			0.005		0.005
T1	328/287	1.00 (Ref.)		1.00 (Ref.)
T2	287/287	0.88 (0.70–1.10)		0.89 (0.70–1.12)
T3	235/287	0.72 (0.57–0.91)		0.70 (0.55–0.90)
Dietary long-chain n – 3 PUFAs			0.010		0.025
T1	340/287	1.00 (Ref.)		1.00 (Ref.)
T2	255/287	0.75 (0.59–0.94)		0.77 (0.60–0.97)
T3	255/287	0.74 (0.59–0.94)		0.76 (0.60–0.97)
Dietary total n – 3 PUFAs			0.014		0.015
T1	319/287	1.00 (Ref.)		1.00 (Ref.)
T2	294/287	0.92 (0.73–1.16)		0.95 (0.75–1.20)
T3	237/287	0.74 (0.59–0.94)		0.74 (0.58–0.94)

ALA, α-linolenic acid; CI, confidence interval; OR, odds ratio; PUFA, polyunsaturated fatty acid; T, tertile.

^aAdjusted for age, BMI, MET-h/week, education, passive smoking, regular drinking, first-degree relatives with cancer and energy intake.