Prevalence and severity of syndrome Z in women with metabolic syndrome on waiting list for bariatric surgery: a cross-sectional study

Table 4 Association between metabolic syndrome components and presence or absence of obstructive sleep apnea

Variables	AHI <5	AHI ≥5		95% CI
Variables	(n = 20)	(n = 63)	OR	Lower	Upper	P value
HDL <40/50	16 (80)	62 (98)	15.5	1.6	148.4	**
Fasting glycose >100 mg/dl	9 (45)	55 (87)	8.4	2.6	26.5	***
Arterial hypertension	12 (60)	61 (96)	20.3	3.8	107.8	***
Triglycerides >150 mg/dl	10 (50)	62 (98)	62.0	7.1	538.3	***

Number of subjects (% in the group)
AHI apnea–hypopnea index, CI confidence interval, OR odds ratio, HDL high-density lipoprotein-cholesterol
** P < 0.01; *** P < 0.001