Table 4.

Multivariate, Forward, Stepwise, Age/Gender/Race-Corrected Models of Metabolic Syndrome Score

	Step 1: RDI	Step 2: RDI+adiponectin	Step 3: RDI+adiponectin+neck circumference
Predictive model of metabolic syndrome score	R2=0.269,	R2=0.349	R2=0.376
	P<0.001	P<0.001	P<0.001
RDIs	β=0.165	β=0.135	β=0.096
	P=0.001	P=0.005	P=0.059
	Partial R=0.343	Partial R=0.298	Partial R=0.203
Adiponectin (ng/mL)	N/A	β=−0.00056	β=−0.00051
		P=0.002	P=0.004
		Partial R=−0.332	Partial R=−0.306
Neck circumference (cm)	N/A	N/A	β=0.588
			P=0.060
			Partial R=0.203

Each model provides total R², P value, and unstandardized β coefficient for predictors of metabolic syndrome score.

At each step, unstandardized β coefficients are adjusted for age, gender, and race.

RDI, respiratory disturbance index; N/A, not applicable.