In addition, the pooled analysis showed that for those with OSA, serum CRP levels in Caucasian (MD = 0.38 mg/dL, p < 0.00001) and Asian (MD = 0.38 mg/dL, p < 0.00001) ethnicities were significantly higher than serum CRP levels of the respective controls, not for mixed ethnicity (MD = 0.06 mg/dL, p = 0.37). Here, CRP is linked to obstructive sleep apnea syndrome.