Table 3. Association of tooth lose rate with mild cognitive impairment in elderly adults, stratified by number of teeth and denture wearing at baseline.

Population	Tooth lose rate	Odds ratio (95% confidence intervals)
		Model 1	Model 2	Model 3	Model 4
No. of teeth at baseline, ≥ 17
	Stable	1 (Ref.)	1 (Ref.)	1 (Ref.)	1 (Ref.)
	Mild	0.86 (0.70-1.06)	0.86 (0.69-1.06)	0.84 (0.67-1.05)	0.83 (0.67-1.04)
	Middle	1.16 (0.95-1.42)	1.16 (0.94-1.42)	1.16 (0.94-1.44)	1.15 (0.93-1.42)
	Severe	1.17 (1.01-1.34)	1.19 (1.03-1.37)	1.23 (1.06-1.42)	1.21 (1.05-1.41)
No. of teeth at baseline, < 17
	Stable	1 (Ref.)	1 (Ref.)	1 (Ref.)	1 (Ref.)
	Mild	0.96 (0.86-1.06)	0.95 (0.86-1.06)	0.98 (0.87-1.09)	0.97 (0.87-1.08)
	Middle	1.10 (0.98-1.24)	1.10 (0.97-1.24)	1.17 (1.03-1.32)	1.16 (1.03-1.31)
	Severe	1.23 (1.09-1.38)	1.25 (1.11-1.41)	1.34 (1.18-1.51)	1.34 (1.18-1.51)
Denture wearing, No
	Stable	1 (Ref.)	1 (Ref.)	1 (Ref.)	1 (Ref.)
	Mild	0.97 (0.88-1.08)	0.97 (0.87-1.08)	0.99 (0.89-1.10)	0.98 (0.88-1.09)
	Middle	1.14 (1.02-1.28)	1.14 (1.02-1.28)	1.19 (1.05-1.34)	1.19 (1.06-1.35)
	Severe	1.13 (1.03-1.25)	1.16 (1.06-1.28)	1.25 (1.14-1.38)	1.35 (1.22-1.50)
Denture wearing, Yes
	Stable	1 (Ref.)	1 (Ref.)	1 (Ref.)	1 (Ref.)
	Mild	0.79 (0.63-0.99)	0.80 (0.63-1.00)	0.80 (0.63-1.02)	0.80 (0.63-1.02)
	Middle	1.00 (0.78-1.27)	1.00 (0.79-1.28)	1.11 (0.87-1.41)	1.11 (0.87-1.41)
	Severe	0.96 (0.77-1.20)	0.97 (0.77-1.21)	1.02 (0.81-1.28)	1.04 (0.82-1.30)

Model 1: adjusted for age, sex, and enrollment year; Model 2: model 1 + further adjusted for province, residence, ethic, marriage status, occupation, education; Model 3: model 2 + further adjusted for ADL score, physical performance score, food diversity score, social activity score, and chronic disease score; Model 4: model 3 + further adjusted for number of teeth and denture wearing at baseline.