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Table 2 Associations of the number of natural teeth or denture use with mortality

From: Number of natural teeth, denture use and mortality in Chinese elderly: a population-based prospective cohort study

 Hazard Ratio[95% Confidence Interval]
Unadjusted modelBasic model aFully adjusted model b
Number of natural teeth
 No. of participants36,15336,10020,816
 No. of deaths25,73725,71312,757
20+1.001.001.00
10–191.59[1.51, 1.69]1.13[1.07, 1.20]1.14[1.06, 1.23]
1–92.60[2.48, 2.72]1.29[1.23, 1.36]1.23[1.15, 1.31]
03.18[3.03, 3.33]1.46[1.38, 1.53]1.35[1.26, 1.44]
 P-trend< 0.001< 0.001< 0.001
Denture use
 No. of participants36,23036,10020,816
 No. of deaths25,82425,71312,757
No1.001.001.00
Yes0.66[0.64, 0.68]0.76[0.74, 0.79]0.81[0.77, 0.84]
  1. HR Hazard ratio, CI Confidence interval;
  2. aBasic model: adjusted for age (years), sex (men or women), and residence (urban or rural), teeth number (0, 1–9, 10–19, ≥20, for analysis of denture use), denture use (yes or no, for analysis of teeth number);
  3. bFully adjusted model: additionally adjusted for education (yes or no), sufficient income for daily needs (yes or no), living arrangement (living alone or with others), BMI (< 18.5, > = 18.5 and < 24, or > =24), smoking (current smoker, former smoker, or never smoker), alcohol drinking (current drinker, former drinker, or non- drinker), frequent vegetable consumption (yes or no), frequent fruit consumption (yes or no), impaired activity of daily living (yes or no), cognitive impairment(yes or not), hypertension (yes or not), self-reported history of diabetes mellitus (yes or no), self-reported history of heart disease (yes or no), self-reported history of cerebrovascular disease (yes or no), and self-reported history of respiratory diseases (yes or no)