Table 4.

The association between metabolic syndrome and subtypes of oral potentially malignant disorders using multivariable Poisson regression

	Leukoplakia		OSF		Verrucous hyperplasia		Erythroplakia
	aRR*	95% CI	aRR†	95% CI	aRR‡	95% CI	aRR‡	95% CI
Metabolic syndrome
Yes vs no	1.37	1.14 to 1.64	1.22	0.87 to 1.71	1.33	0.51 to 3.46	1.59	0.67 to 3.75
Component of metabolic syndrome
Central obesity	1.3	1.07 to 1.57	1.06	0.74 to 1.52	1.17	0.47 to 2.89	0.94	0.37 to 2.36
Hypertriglyceridaemia	1.29	1.06 to 1.57	1.21	0.83 to 1.76	0.98	0.40 to 2.40	1.39	0.54 to 3.58
Low HDL-C	1.17	0.97 to 1.42	0.94	0.64 to 1.38	0.79	0.31 to 1.99	1.18	0.47 to 2.97
Elevated blood pressure	0.9	0.75 to 1.09	0.95	0.66 to 1.37	1.34	0.46 to 3.85	1.22	0.50 to 3.00
Hyperglycaemia	1.16	0.96 to 1.41	1.43	0.99 to 2.05	1.28	0.52 to 3.19	0.99	0.37 to 2.64
Metabolic syndrome score	1.16	1.09 to 1.24	1.1	0.98 to 1.24	1.02	0.68 to 1.54	1.13	0.83 to 1.55

*aRR for metabolic syndrome, components of metabolic syndrome and metabolic syndrome score were treated in different models with adjustment of age, sex, education level, betel nut chewing, cigarette smoking, alcohol drinking, meat, vegetable and fruit consumption.

†aRR for metabolic syndrome, components of metabolic syndrome and metabolic syndrome score were treated in different models with adjustment of age, sex, education level, betel nut chewing, cigarette smoking, alcohol drinking, meat and fruit consumption.

‡aRR for metabolic syndrome, components of metabolic syndrome and metabolic syndrome score were treated in different models with adjustment of betel nut chewing and cigarette smoking.

aRR, adjusted rate ratio; HDL-C, high-density lipoprotein cholesterol; OSF, oral submucous fibrosis.