Table 1.

Demographic, laboratory, and sleep parameters of the subjects.

	Non-obese		Obese		p
	Non-OSA (group 1)	OSA (group 2)	Non-OSA (group 3)	OSA (group 4)
	(n = 26)	(n = 30)	(n = 20)	(n = 38)
Age (years)	9.1 ± 3.1	9.9 ± 4.3	11.4 ± 3.2	11.2 ± 3.2	0.056
Male gender, n (%)	19 (73.1)	20 (66.7)	16 (80.0)	22 (57.9)	0.334
Weight (kg)c	29.3 ± 10.1	34.9 ± 17.8	63.7 ± 16.3	61.5 ± 21.4	<0.001
Height (m)b	1.32 ± 0.16	1.34 ± 0.24	1.51 ± 0.14	1.47 ± 0.15	<0.001
BMI z-scorec	−0.004 ± 0.926	0.297 ± 1.051	2.209 ± 0.313	2.309 ± 0.472	<0.001
SBP (mmHg)c	101 ± 12	111 ± 17	121 ± 13	123 ± 16	<0.001
DBP (mmHg)	61 ± 9	65 ± 8	68 ± 6	70 ± 9	0.002
OAI/ha,d	0 (0–0)	1.7 (0.5–7.1)	0 (0–0.1)	1.0 (0.2–4.6)	<0.001
OAHI/ha,d	0.2 (0–0.5)	9.4 (4.2–19.8)	0.2 (0.1–0.5)	4.5 (2.0–14.2)	<0.001
Arousal index/ha	5.7 (3.9–9.9)	8.9 (6.6–14.5)	5.3 (4.0–7.8)	6.0 (4.4–13.6)	0.007
ANP (fmol/ml)b	2292 ± 948	2026 ± 656	1467 ± 655	1660 ± 658	<0.001
BNP (pmol/l)	3.1 (1.6–7.6)	3.7 (1.6–9.6)	1.4 (0.3–5.3)	2.8 (0.7–5.4)	0.067

BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; OAI, obstructive apnea index; OAHI, obstructive apnea–hypopnea index; ANP, atrial natriuretic peptide; BNP, brain natriuretic peptide.

Data were presented as mean ± SD, median (IQR), and number (percentage) for parametric, non-parametric, and categorical data, respectively.

p values were obtained from ANOVA, Kruskal–Wallis test, and Chi-square test table for parametric, non-parametric, and categorical data, respectively.

Post hoc analyses, Tukey HSD, or Games–Howell method for the parametric variables and Mann–Whitney U test with adjusted p values (significant at p  < 0.008) for non-parametric variables.

^aSignificant difference between group 1 and 2.

^bSignificant difference between group 1 and 3.

^cSignificant difference between group 2 and 4.

^dSignificant difference between group 3 and 4.