FGF19 and atrial fibrillation: Considering the correlation between FGF19 and DM, we included DM and variables selected by univariate logistic analysis (p < 0.100) in the multivariate logistic regression, indicating that the plasma FGF19 level was an independent protective factor for AF (OR = 0.992, 95% CI: 0.986–0.998, p = 0.011; Table 2).