Table 3. Adjusted hazard ratio of incidence of metabolic syndrome by eating speed.

	Eating speed
	Not fast	Fast
n	7040	1901
Number of incident cases	477	170
Person-years of follow-up	20 383.5	5434
Incidence rate	2.3%	3.1%
Hazard ratio (95% CI)
Model 1a	1.00 (reference)	1.40 (1.18–1.67)
Model 2b	1.00 (reference)	1.30 (1.05–1.60)

^aBy the Cox proportional hazard model, adjusted for age and sex.

^bBy the Cox proportional hazard model, adjusted for age, sex, smoking, drinking alcohol, dietary behavior, physical activity, sleeping, and medication history.