TABLE 5.

Sensitivity analyses for association between nut consumption and risk of cognitive impairment.

Nut consumption	Total	Cases	Model 1		Model 2		Model 3
			RR (95% CI)	P value	RR (95% CI)	P value	RR (95% CI)	P value
Sensitivity analysis 1: in participants attending the follow-up survey and completing MMSE at least twice
None or not weekly	6383	2479	1.00 (Ref)	–	1.00 (Ref)	–	1.00 (Ref)	–
<70 g/week	311	90	0.75 (0.62–0.90)	<0.01	0.83 (0.69–1.00)	0.05	0.85 (0.70–1.03)	0.09
≥70 g/week	1166	335	0.73 (0.66–0.81)	<0.01	0.81 (0.73–0.90)	<0.01	0.83 (0.75–0.92)	<0.01
P for trend			<0.01		<0.01		<0.01
Sensitivity analysis 2: using MMSE score <24 to define cognitive impairment
None or not weekly	5584	3278	1.00 (Ref)	–	1.00 (Ref)	–	1.00 (Ref)	–
<70 g/week	318	164	0.83 (0.74–0.94)	<0.01	0.89 (0.79–1.00)	0.06	0.93 (0.82–1.04)	0.20
≥70 g/week	1158	546	0.79 (0.73–0.85)	<0.01	0.90 (0.85–0.97)	<0.01	0.93 (0.86–0.99)	0.03
P for trend			<0.01		<0.01		0.02

RR, relative risk; CI, confidence interval; g/week, grams per week; MMSE, mini-mental state examination. Variables in model 1, model 2, and model 3 were same as those in Table 2.

The bold values mean “P < 0.05”.