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Table 4 Factors related to the incidence of dementia according to the number of teeth lost

From: The effect of missing teeth on dementia in older people: a nationwide population-based cohort study in South Korea

Variables Odds Ratio Estimates p-value
Point Estimate 95% Wald Confidence Limits
The number of teeth lost
 1–6 (standard = 0) 1.158 1.124 1.194 <.0001a
 7–12 (standard = 0) 1.272 1.210 1.338 <.0001a
 ≥13 (standard = 0) 1.313 1.179 1.461 <.0001a
Female (standard = male) 1.330 1.290 1.371 <.0001a
Age
 70–79 (standard = 60–69) 1.879 1.824 1.936 <.0001a
 ≥80 (standard = 60–69) 2.379 2.216 2.553 <.0001a
 Urban resident (standard = rural resident) 1.329 1.293 1.366 <.0001a
Eligibility
 Family member (standard = head of household) 1.005 0.975 1.035 0.7450
 Medical aid beneficiaries (standard = head of household) 1.499 1.416 1.588 <.0001a
Income level
 Second quintile (standard = first quintile) 0.979 0.930 1.032 0.4328
 Third quintile (standard = first quintile) 0.947 0.900 0.996 0.0353a
 Fourth quintile (standard = first quintile) 0.939 0.896 0.984 0.0084a
 Fifth quintile (standard = first quintile) 0.952 0.911 0.995 0.0290a
History of periodontal treatment (standard = no history) 0.961 0.931 0.991 0.0113a
History of dental caries (standard = no history) 1.064 1.032 1.097 <.0001a
  1. aStatistically significant at a 95% confidence interval