Fig. 3

Cox regression using restricted cubic spline regression among participants with asthma. (a) crude Cox regression between CDAI and all-cause mortality, (b) multivariable Cox regression between CDAI and all-cause mortality (c) crude Cox regression between DII and all-cause mortality, (d) multivariable Cox regression between DII and all-cause mortality. multivariable regression was adjusted by age, sex, race, body mass index, education level, smoke history, ratio of family income to poverty, alcohol intake, diabetes, stroke history, coronary heart disease, cancer, and healthy eating index. CI, confidence interval; CDAI, composite dietary antioxidant index; DII, Dietary Inflammatory Index