Figure 2.

The dose–response relationship between dietary fiber intake and serum Klotho in all participants. Point value estimation (solid line) and 95% confidence interval calculation (dashed line) were estimated using a restrictive cubic spline analysis model, knotted at the 10th, 50th, and 90th percentiles (minimum value as reference). The model was adjusted for age, sex, BMI, PIR, education attainment, ethnicity, serum cotinine, alcohol drinking, diabetes, hypertension, eGFR, and dietary energy intake. p for non-linearity = 0.016.