Table 3.
Threshold effect analyses of serum magnesium level on MCI using two piecewise regression models.
| Turnpoint | Model 1 |
Model 2 |
Model 3 |
|||
|---|---|---|---|---|---|---|
| OR (95%CI) | P-value | OR (95%CI) | P-value | OR (95%CI) | P-value | |
| Magnesium <1.12 mmol/L (Per 1 SD) | 0.72 (0.59–0.87) | 0.001 | 0.75 (0.62–0.91) | 0.004 | 0.76 (0.62–0.93) | 0.007 |
| Magnesium >1.24 mmol/L (Per 1 SD) | 1.22 (1.03–1.45) | 0.020 | 1.20 (1.01–1.43) | 0.041 | 1.21 (1.02–1.43) | 0.032 |
Note: P < 0.05 was considered statistically significant. Abbreviations: HD: hemodialysis; OR: odds ratio; CI: confidence interval; MCI: mild cognitive impairment; SD: standard deviation. Model 1: no adjustment; Model 2: adjusted for age and sex; Model 3: adjusted for age, sex, smoking, working, educational level, living status, Hypertension, diabetes, cerebrovascular disease, mean arterial pressure, waist-hip circumference ratio, serum urid acid, iPTH, and hs-CRP levels.