Table 2

 Stepwise multiple regression analysis of the relationship between C-reactive protein (CRP) levels and various independent variables

Variableβ95% CI(lower bound)95% CI(upper bound)p Value
β represents parameter estimates and CI the 95% confidence interval of the parameter estimates. Groups are included as covariates.
BMI, body mass index; ESS, Epworth Sleepiness Scale; AHI, apnoea/hypopnoea index; TST, total sleep time; Sao2, oxygen saturation; DI, desaturation index.
BMI0.2210.0650.376<0.001
Total cholesterol0.1420.0250.2580.043
ESS0.0950.0020.2020.079
AHÍ0.015–0.0270.0560.289
Basal Sao20.046–0.2140.3050.172
Min Sao2–0.058–0.1550.0390.485
%TST <90%1.427–1.7494.6030.738
DI0.0470.0020.0920.573
Age–0.011–0.1100.0860.982
Smoking–0.018–1.4821.4450.907
LDL-cholesterol–0.654–1.6150.3080.225
HDL-cholesterol–0.574–3.8362.6870.873
Triglyceride–0.083–0.8510.6860.792