Association of body mass index and dietary intake with mild cognitive impairment and dementia: a retrospective cohort study

Table 2 Association of body mass index with mild cognitive impairment and dementia using multinomial logistic regression analysis

	Univariate regression model				Multivariate regression model ^a
	Risk of mild cognitive impairment		Risk of dementia		Risk of mild cognitive impairment		Risk of dementia
	Odds ratio (95% CI )	p -value	Odds ratio (95% CI)	p -value	Odds ratio (95% CI )	p -value	Odds ratio (95% CI)	p -value
Body mass index (kg/m²)
18.5–22.9	Reference		Reference		Reference		Reference
<18.5	1.63 (0.42–6.35)	0.480	2.72 (0.52–14.14)	0.234	2.04 (0.51–8.16)	0.311	2.33 (0.39–14.06)	0.357
23.0–24.9	1.49 (0.82–2.69)	0.188	0.90 (0.33–2.44)	0.833	1.47 (0.80–2.72)	0.216	0.97 (0.34–2.80)	0.952
≥25.0	2.04 (1.23–3.38)	0.006	1.06 (0.46–2.44)	0.886	1.91 (1.12–3.26)	0.017	1.14 (0.46–2.76)	0.783

CI, confidence interval
Boldface p-values are statistically significant.
– Results are not available due to low sample sizes of dementia event.
^aMultivariable multinomial logistic regression model was adjusted for age, education level, and type 2 diabetes.

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