Table 4.
Threshold effect analysis of CDAI on S-Klotho by the two-piecewise linear regression.
| Characteristic | Adjusted β (95% CI) | P value |
|---|---|---|
| Fitting by the standard linear model | 2.56 (0.65, 4.47) | <0.01 |
| Fitting by the two-piecewise linear model | ||
| Inflection point | ||
| CDAI < 1.5 | 0.46 (-1.9, 3.70) | 0.78 |
| CDAI > 1.5 | 3.38 (1.49, 5.27) | <0.01 |
Age, sex, marital status, race, poverty, education, energy intake, BMI, waist circumference, smoke status, and medication use were adjusted.