Prognostic implications of obstructive sleep apnea in patients with acute coronary syndrome stratified by homocysteine level: a prospective cohort study

Table 2 Overnight sleep monitoring results stratified by the interaction term between OSA and homocysteine

Variables	Homocysteine ≤ 15 μmol/L		P	Homocysteine > 15 μmol/L		P	P^*
Variables	OSA (n = 521)	Non-OSA (n = 467)	P	OSA (n = 298)	Non-OSA (n = 267)	P	P^*
AHI, events/h	28.8 (20.7, 41.6)	7.7 (3.7, 10.6)	< 0.001	29.4 (21.4, 43.0)	7.8 (5.0, 11.0)	< 0.001	0.522
ODI, events/h	27.1 (20.0, 39.0)	8.6 (4.6, 12.0)	< 0.001	27.9 (21.2, 40.5)	8.8 (5.4, 11.9)	< 0.001	0.457
T90, %	6.0 (2.0, 16.0)	0.6 (0.0, 3.0)	< 0.001	6.4 (2.0, 14.0)	0.9 (0.1, 3.0)	< 0.001	0.640
Minimum SaO₂, %	83 (77, 86)	87 (84, 90)	< 0.001	82 (77, 86)	87 (84, 89)	< 0.001	0.133
Mean SaO₂, %	93 (92, 94)	95 (93, 95)	< 0.001	93 (92, 94)	94 (93, 95)	< 0.001	0.077
ESS scoring	8 (4, 12)	6 (3, 10)	0.001	8 (5, 12)	6 (3, 10)	0.002	0.677

AHI apnea and hypopnea index, ESS the Epworth Sleepiness Scale, ODI oxygen desaturation index, T90 percentage of time with SaO₂ < 90%, SaO₂ oxyhemoglobin saturation

ISSN: 1465-993X