Applicability of visceral adiposity index in predicting metabolic syndrome in adults with obstructive sleep apnea: a cross-sectional study

Table 1 The anthropometric and polysomnographic parameters of all patients according to the severity of OSA

	AHI (0-5)	AHI (5-15)	AHI (15-30)	AHI (30-)	P
Subjects	50	67	89	205
Age, years	44.36 ± 16.18	49.70 ± 11.64	49.72 ± 12.98	49.45 ± 13.62	0.105
Male sex, number (%)	30 (60 %)	41 (61.19 %)*****	69(77.52 %)	172(83.9 %)*, ***	0.000
Current smoking, number (%)	6(12 %)	12(17.91 %)	19(21.35 %)	44(21.46 %)	0.445
Antilipimic agents, number (%)	2(4 %)	3(4.48 %)	4(4.49 %)	14(6.83 %)	0.772
Antidiabetic agents, number (%)	1(2 %)	4(5.97 %)	6(6.74 %)	16(7.80 %)	0.522
Antihypertensive agents, number (%)	8(16 %)	12(17.91 %)	27(30.34 %)	56(27.32 %)	0.108
Waist circumference (cm)	88.70 ± 10.35, *	90.43 ± 8.79**, ***	94.58 ± 8.43, , ****	98.26 ± 10.27*, *, ****	0.000
BMI (kg/m)²	23.94 ± 3.03, *	24.98 ± 3.25*****	25.94 ± 3.69, ****	27.84 ± 5.93*, *, ****	0.000
AHI	2.14(0.80-4.25), , **	9.30(7.20-12.30), *, ***	21.30(18.25-24.25), , ****	52.40(40.95-65.45)*, *, ****	0.000
Mean SpO2 (%)	96.50 (95.00-97.00), *	96.00(95.00-96.00)*****	95.00(94.00-96.00), ****	92.00(88.00-94.00)*, *, ****	0.000
LaSO2 (%)	90.00(84.75-92.00), *	86.00(80.00-88.00)**, ***	79.00(75.00-85.50), , ****	67.00(57.00-78.00)*, *, ****	0.000
TS90% (%)	0.00(0.00-0.36), *	0.18(0.02-0.78)*****	0.98(0.10-2.57), ****	7.60(2.71-17.93)*, *, ****	0.000
ODI	1.50(0.50-3.40), *	6.30(3.40-9.40)**, ***	15.54(9.58-19.95), , ****	46.20(31.60-62.40)*, *, ****	0.000

Normally distributed data (age, waist circumference, BMI) were expressed as mean ± SD skewed data (including, AHI, ODI, TS90 %, LaSO2, mean SpO2) were presented as median (interquartile range). Categorical variables were expressed as number (percentage), OSA obstructive sleep apnea, BMI body mass index, AHI apnea-hypopnea index; mean SpO2: mean nocturnal oxygen saturation, LaSO2 lowest O2 saturation, TS90% the percentage of sleep duration with SpO2 < 90 %, ODI oxygen desaturation index; *: if P < 0.05 between group 0 [AHI (0-5)] and group 1 [AHI(5-15)]; **: if P < 0.05 between group 0 [AHI (0-5)] and group 2 [AHI(15-30)]; ***: if P < 0.05 between group 0 [AHI (0-5)] and group 3[AHI(30-)]; ****: if P < 0.05 between group 1 and group 2; *****: if P < 0.05 between group 1 and group 3; ******: if P < 0.05 between group 2 and group 3

ISSN: 1471-2466