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 5 Comparing groups of patients with normal and elevated uric acid level regarding comorbidities and polysomnographic data (n = 100)

	Total (n = 100)		Uric acid				Test of sig	p
	Total (n = 100)		Normal (n = 26)		Abnormal (n = 74)
	No	%	No	%	No	%
DM
No	24	24.0	8	30.8	16	21.6	χ² = 0.883	0.347
Yes	76	76.0	18	69.2	58	78.4	χ² = 0.883	0.347
HTN
No	20	20.0	6	23.1	14	18.9	χ² = 0.208	0.648
Yes	80	80.0	20	76.9	60	81.1	χ² = 0.208	0.648
DVT
No	94	94.0	20	76.9	74	100.0	χ² = 18.167^*	^FEp < 0.001^*
Yes	6	6.0	6	23.1	0	0.0	χ² = 18.167^*	^FEp < 0.001^*
Apnea hypopnea index
Min.–max	7.70–55.0		7.70–39.0		16.80–55.0		t = 4.399^*	< 0.001^*
Mean ± SD	31.93 ± 11.78		23.90 ± 9.79		34.75 ± 11.15
Median (IQR)	32.0 (22.0–39.0)		26.60 (17.8–29.60)		35.0 (26.10–45.0)
ODI
Min.–max	1.70–60.0		1.70–60.0		15.0–60.0		U = 788.0	0.171
Mean ± SD	22.21 ± 13.89		19.48 ± 15.47		23.17 ± 13.27
Median (IQR)	18.60 (16.10–20.80)		15.0 (8.20–27.0)		18.60 (16.50–19.80)
t90%
Min.–max	0.0–38.0		0.0–38.0		0.10–38.0		U = 404.0^*	< 0.001^*
Mean ± SD	7.17 ± 8.90		4.55 ± 10.42		8.09 ± 8.19
Median (IQR)	5.30 (0.90–9.80)		0.10 (0.0–1.30)		6.40 (2.90–9.80)

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