CRP and obstructive sleep apnea syndrome: Similarly, Karamanlı et al. [37] noted a nonsignificant decrease in the CRP levels (from 8.3 ± 8.5 mg/L to 6.2 ± 4.3 mg/L; p = 0.064) after a 3-month-CPAP therapy in 35 OSAHS patients.