Correlation between serum uric acid and pulmonary arterial hypertension based on echo probability in patients with obstructive sleep apnea syndrome

The Egyptian Journal of Bronchology

Table 3 Comparing groups of patients with or without pulmonary HTN regarding comorbidities and sleep study parameters (n = 100)

	Total (n = 100)		Pulmonary HTN				Test of sig	p
	Total (n = 100)		No (n = 22)		Yes (n = 78)
	No	%	No	%	No	%
DM
No	24	24.0	6	27.3	18	23.1	χ² = 0.166	0.684
Yes	76	76.0	16	72.7	60	76.9	χ² = 0.166	0.684
HTN
No	20	20.0	8	36.4	12	15.4	χ² = 4.720^*	^FEp = 0.039^*
Yes	80	80.0	14	63.6	66	84.6	χ² = 4.720^*	^FEp = 0.039^*
History of DVT
No	94	94.0	18	81.8	76	97.4	χ² = 7.421^*	^FEp = 0.020^*
Yes	6	6.0	4	18.2	2	2.6	χ² = 7.421^*	^FEp = 0.020^*
Apnea hypopnea index
Min.–max	7.70–55.0		7.70–51.30		16.80–55.0		t = 2.940^*	0.004^*
Mean ± SD	31.93 ± 11.78		25.65 ± 13.42		33.70 ± 10.71
Median (IQR)	32.0 (22.0 – 39.0)		26.70 (11.30–34.0)		35.0 (26.10–41.0)
ODI
Min.–max	1.70–60.0		1.70 31.90		13.70–60.0		U = 666.0	0.110
Mean ± SD	22.21 ± 13.89		16.32 ± 10.72		23.87 ± 14.28
Median (IQR)	18.60 (16.10–20.80)		15.0 (7.80–27.0)		18.60 (16.30–20.60)
t90%
Min.–max	0.0–38.0		0.0–11.90		0.0–38.0		U = 308.0^*	< 0.001^*
Mean ± SD	7.17 ± 8.90		1.94 ± 3.66		8.65 ± 9.39
Median (IQR)	5.30 (0.90–9.80)		0.10 (0.0–1.30)		6.40 (2.50–11.20)

IQR Interquartile range, SD Standard deviation, t Student t-test, U Mann–Whitney test, χ² chi-square test, FE Fisher exact, p p-value for comparing between different categories
^*Statistically significant at p ≤ 0.05