Fig. 2From: Effect of arterial blood bicarbonate (HCO3−) concentration on the accuracy of STOP-Bang questionnaire screening for obstructive sleep apneaA HCO3− concentration is positively correlated with CT90 (r = 0.437, P < 0.001); B HCO3− concentration is positively correlated with AHT (r = 0.433, P < 0.001); C HCO3− concentration is positively correlated with HAD (r = 0.433, P < 0.001)Back to article page