. 2019 Apr 25;19:61. doi: 10.1186/s12903-019-0750-4

Table 3.

Factors associated with the incidence of dementia

Effect		Odds Ratio Estimates			p-value
Effect		Point Estimate	95% Wald Confidence Limits		p-value
History of tooth extraction (standard = no history)		1.180	1.146	1.215	<.0001^a
Female (standard = male)		1.326	1.286	1.367	<.0001^a
Age	70–79 (standard = 60–69)	1.882	1.827	1.938	<.0001^a
Age	≥80 (standard = 60–69)	2.378	2.216	2.553	<.0001^a
Urban resident (standard = rural resident)		1.330	1.294	1.367	<.0001^a
Eligibility	Family member (standard = head of household)	1.005	0.975	1.035	0.7616
Eligibility	Medical aid beneficiaries (standard = head of household)	1.497	1.414	1.585	<.0001^a
Income level	Second quintile (standard = first quintile)	0.980	0.930	1.032	0.4347
	Third quintile (standard = first quintile)	0.947	0.900	0.997	0.0368^a
	Fourth quintile (standard = first quintile)	0.938	0.895	0.984	0.0080^a
	Fifth quintile (standard = first quintile)	0.952	0.911	0.994	0.0266^a
History of periodontal treatment (standard = no history)		0.962	0.932	0.992	0.0132^a
History of dental caries (standard = no history)		1.067	1.035	1.101	<.0001^a

^aStatistically significant at 95% Confidence Interval