Usefulness of Cathepsin S to Predict Risk for Obstructive Sleep Apnea among Patients with Type 2 Diabetes

Table 3

Correlation between CTSS and clinical and laboratory variables.

Parameters	Rho	value
AHI	0.559	<0.001
Lowest SaO2	-0.479	<0.001
Mean SaO2	-0.410	<0.001
CT90	0.363	<0.001
Arousal index	0.433	<0.001
FBG	0.427	<0.001
HbA1c	0.256	0.111

Spearman’s rho was used for correlations between CTSS and clinical and laboratory parameters. CTSS: cathepsin S; AHI: apnea-hypopnea index; SaO₂: arterial oxygen saturation; CT90: percentage of cumulative time with oxygen saturation below 90%; FBG: fasting blood glucose; HbA1c: glycated hemoglobin.