Figure 1.

Associations of plasma choline and betaine with atrial fibrillation risk using generalized additive models in the Hordaland Health Study. Multivariable models were constructed with adjustment for sex, age, BMI (continuous), diabetes mellitus (yes/no), hypertension (yes/no), and smoking (yes/no). Both exposures were log‐transformed before entering the models. The solid lines show HRs, and the shaded areas 95% CIs. Density plots indicate the distribution of the biomarkers, and dotted lines denote the 5th, 50th, and 95th percentiles. BMI indicates body mass index; CI, confidence interval; HR, hazard ratio.