Table 2.
The association between dietary fiber intake and serum Klotho levels among all participants.
| Dietary Fiber (g/Day) | Percent Changes (%) and 95% CI | |||||
|---|---|---|---|---|---|---|
| Model 1 | p Value | Model 2 | p Value | Model 3 | p Value | |
| Per IQR increases | 1.5 (0.6, 2.3) | 0.001 | 1.9 (1.0, 2.8) | <0.001 | 1.9 (0.8, 3.0) | <0.001 |
| Quartile 1 | Ref | Ref | Ref | |||
| Quartile 2 | 0.9 (−1.5, 3.3) | 0.489 | 1.3 (−1.1, 3.8) | 0.283 | 1.4 (−1.2, 4.1) | 0.311 |
| Quartile 3 | 2.5 (0.1, 5.0) | 0.043 | 3.2 (0.8, 5.6) | 0.011 | 3.1 (0.5, 5.9) | 0.025 |
| Quartile 4 | 3.5 (1.3, 5.7) | 0.002 | 4.6 (2.3, 6.9) | <0.001 | 4.7 (1.8, 7.6) | 0.002 |
| p for trend | <0.001 | <0.001 | <0.001 | |||
Note: CI, confidence interval; IQR, interquartile range; Model 1 was the crude model, including dietary fiber intake; Model 2 was adjusted for age and sex; Model 3 was further adjusted for BMI, PIR, education attainment, ethnicity, serum cotinine, alcohol drinking, diabetes or not, hypertension or not, eGFR and dietary energy intake. Dietary fiber intake quartile ranges: Quartile 1 = 0 to 9.6 g/day; Quartile 2 = 9.7 to 14.8 g/day; Quartile 3 = 14.9 to 21.7 g/day; Quartile 4: 21.8 to 113.9 g/day.