Table 1:

Cognitive impairment according to socio-demographic characteristics and oral health status

Variables		N	MMSE<24 points n(%)	P
Gender	Male	100	10 (10.0)	<0.001
	Female	294	120 (40.8)
Age (yr)	< 75	136	16 (11.8)	<0.001
	75–84	178	62 (34.8)
	≥ 85	80	52 (65.0)
Education (yr)	0–3	154	102 (66.2)	<0.001
	≥ 4	240	28 (20.7)
Residence status	Alone	212	88 (41.5)	<0.001
	With family	182	42 (23.1)
General disease	Present	302	100 (33.1)	0.928
	Absent	92	30 (32.6)
Remaining tooth (n)	0–10	106	50 (47.2)	<0.001
	11–20	96	34 (35.4)
	≥ 21	192	46 (24.0)
Decayed tooth (n)	Present	124	42 (33.0)	0.802
	Absence	270	88 (32.6)
Dental plaque index	≤ 50%	112	23 (23.0)	<0.001
	>50%	233	83 (70.9)
Bleeding	Present	362	124 (34.3)	0.074
	Absent	32	6 (18.8)
Halitosis self-awareness	Present	294	108 (36.7)	0.007
	Absent	100	22 (22.0)
Food impaction	Present	186	74 (39.8)	0.007
	Absent	208	56 (26.9)
Total		394	130 (33.0)

P-values obtained from the Chi-square test.