Association between presence of 20 or more natural teeth and all-cause, cancer-related, and cardiovascular disease-related mortality: Yamagata (Takahata) prospective observational study

Table 5 Adjusted hazard ratios and 95% confidence intervals for variables associated with all-cause mortality in the group having ≥ 20 teeth

Variable		Adjusted HR	(95% CI)	p value
Age (years)	(per 1 year increase)	1.065	1.023–1.109	0.002*
Sex	(female vs male)	0.630	0.271–1.465	0.283
BMI (kg/m⁻²)	(per 1 kg/m² increase)	0.912	0.815–1.022	0.112
Smoking habit	(Yes vs no)	3.711	1.642–8.387	0.002*
Alcohol consumption (g/day)	(per 1 g/day increase)	0.995	0.980–1.010	0.532
Educational status	(High vs low)	0.752	0.342–1.654	0.479
	(Middle vs low)	0.500	0.170–1.471	0.208
Hypertension	(Yes vs no)	0.756	0.351–1.626	0.474
Diabetes mellitus	(Yes vs no)	2.555	0.933–6.994	0.068
Perceived mental stress	(Not very often vs never)	0.465	0.128–1.690	0.245
	(Some of the time vs never)	0.398	0.117–1.355	0.140
	(Most of the time vs never)	0.355	0.070–1.812	0.213

Adjusted for age, sex, BMI, smoking habit, alcohol consumption, educational status, hypertension, diabetes mellitus, and perceived mental stress
HR hazard ratio, CI confidence interval, BMI body mass index
^*Statistically significant (p < 0.05)

ISSN: 1472-6831