Biomarkers Dippers (29) Non-dippers (57) Resistin, ng/ml 3.10± 1.49 5.29± 4.87 p-0.077 Free fatty acids mmol/l 0.264± 0.166 0.228± 0.106 p-0.379 Isoprostanes 0.098 ± 0.01 0.092± 0.081 p-0.799

Table 4: Biomarkers of oxidative stress and insulin resistance in 510 OSA dippers/ non-dippers.