Table 2 .

Relationships between intake of nuts and risk of cognitive impairment in the Singapore Chinese Health Study

	Intake of nuts				P-trend	OR (95% CI) per 1 serving/week
	<1 Serving/month	1–3 Servings/month	1 Serving/week	≥2 Servings/week
Cases/N	1,013/6,203	992/7,313	252/2,083	140/1,138
Model 1a	1.00	0.88 (0.80–0.98)	0.84 (0.72–0.98)	0.84 (0.69–1.02)	0.03	0.95 (0.91–1.00)
Model 2b	1.00	0.88 (0.80–0.98)	0.82 (0.70–0.96)	0.79 (0.64–0.98)	0.01	0.94 (0.89–0.99)
Model 3c	1.00	0.88 (0.80–0.98)	0.81 (0.69–0.96)	0.79 (0.64–0.98)	0.01	0.94 (0.89–0.99)

Linear trend was calculated by treating median values across groups as a continuous variable in the model.

^aModel 1 was adjusted for age at cognition assessment, sex, dialect groups, educational level and marital status.

^bModel 2 was further adjusted for physical activities, BMI, smoking status, alcohol consumption, sleep duration, total daily energy intake, tea drinking and AHEI-2010 score (excluding the item for nuts and legumes).

^cModel 3 was further adjusted for physician-diagnosed history of diabetes, hypertension, CVD and cancer.