The Relationship between High Risk for Obstructive Sleep Apnea and General and Central Obesity: Findings from a Sample of Chilean College Students

Table 3

Logistic regression analyses: associations of high OSA risk with overweight and obesity among 916 college students in Chile.

Model	WHO criteria	WHO criteria		IDF criteria^f
	BMI: 25–29 versus BMI <25	BMI ≥30 versus BMI <25	WHR ≥0.8875 versus WHR <0.8875^e	Central obesity versus no central obesity
	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)
Model 1: unadjusted	1.23 (0.63, 2.42)	8.45 (4.76, 15.00)	1.85 (1.11, 3.08)	3.27 (1.94, 5.51)
Model 2: adjusted for demographic factors^a	1.09 (0.55, 2.17)	8.26 (4.59, 14.86)	1.65 (0.96, 2.86)	3.26 (1.92, 5.56)
Model 3: adjusted for demographic and lifestyle factors^b	1.53 (0.74, 3.17)	10.24 (5.30, 19.81)	1.68 (0.93, 3.05)	3.37 (1.90, 5.97)
Model 4: Model 3 + blood pressure^c	1.59 (0.76, 3.36)	10.92 (5.39, 22.11)	1.59 (0.87, 2.91)	3.31 (1.85, 5.95)
Model 5: Model 4 + self-rated health^d	0.89 (0.35, 2.23)	9.96 (4.42, 22.45)	1.45 (0.71, 2.95)	2.78 (1.43, 5.40)

BMI: body mass index; WHR: waist-to-hip ratio; IDF: International Diabetes Federation; WC: waist circumference; OR: odds ratio; 95% CI: 95% confidence interval.
^aDemographic factors included age (continuous), sex, and education level.
^bLifestyle factors included any physical activity participation, alcohol consumption (within the past year—yes/no), cigarette smoking (never, former, or current), and use of energy drinks (yes/no).
^cContinuous blood pressure variables.
^dSelf-rated health (SRH) was evaluated by asking, “how would you say your health compares to others your age.” Poor SRH = worse than others my age. Good SRH = better or same as others my age.
^eWHR ≥0.8875 refers to the top quartile of WHR.
^fCentral obesity as defined by the International Diabetes Federation (IDF): WC ≥90 cm for men and WC ≥80 cm for women in South America.