Table 2:

Logistic regression for cognitive function by characteristics of subjects

Independent variables		OR (95% CI)
Gender	(Male=0, Female=1)	1.294	(0.558–3.001)
Age (yr)	(<80=0, ≥80 =1)	3.177	(1.824–5.534)
Education	(Uneducated=0, Educated=1)	0.110	(0.036–0.334)
Living arrangement	(Alone=0, With Family=1)	0.533	(0.300–0.947)
General disease	(Absent=0, Present=1)	0.620	(0.312–1.230)
Remaining tooth (n)	(<17=0, ≥17=1)	0.943	(0.510–1.745)
Decayed tooth	(Absent=0, Present=1)	1.488	(0.845–2.623)
Dental plaque index	(≤50%=0, >50%=1)	2.304	(1.212–4.380)
Bleeding of gingiva	(Absent=0, Present=1)	0.610	(0.218–1.712)
Halitosis self-awareness	(Absent=0, Present=1)	0.320	(0.162–0.634)
Food impaction	(Absent=0, Present=1)	0.733	(0.402–1.338)

OR: Odds Ratio, CI: Confidence Interval

Model Chi-square=12.81, df =8, pseudo R-square=35.2% (Nagelkerke), P<0.001