Figures & data
GAM was employed to plot Smooth curve fitting to investigate the correlation between MHR and the prevalence of CHD after adjusting for sex, age, sex, exercise, education, annual family income, current smoking and drinking, WC, BMI, hypertension, diabetes, LDL-C, TG, eGFR, lipid-lowering therapy and cerebrovascular disease history. In this plot, the solid line indicates the estimated risk of the presence of CHD, and the dotted lines serve as 95% confidence interval. P for non-linear association was conducted by logarithmic likelihood ratio test to compare the one piecewise logistic model with two piecewise logistic models.P for non-linear association indicates the correlation between MHR and the CHD risk followed a linear pattern.
The logistic model was adjusted for sex, age, exercise, education, annual family income, current smoking and drinking, WC, BMI, hypertension, diabetes, LDL-C, TG, eGFR, lipid-lowering therapy and cerebrovascular disease history apart from the variable that was stratified. None of the stratified variables significantly changed the efficacy of MHR on the CHD risk (all P for interaction >0.05).