Table 3.
Associations of each quartile (Q) of 24-h urinary sodium, potassium excretion, and their ratio with microalbuminuria in a cross-sectional study in China in 2017.
| Factors | Model 1 | Model 2 | ||
|---|---|---|---|---|
| OR | 95% CI | OR | 95% CI | |
| Sodium excretion, (mg/24 h) | ||||
| Q1 | 1.00 | 1.00 | ||
| Q2 | 1.58 | 0.89–2.81 | 1.56 | 0.87–2.80 |
| Q3 | 1.68 | 0.95–2.96 | 1.67 | 0.94–2.98 |
| Q4 | 2.37 | 1.37–4.09 | 2.20 | 1.26–3.84 |
| P for trend | 0.002 | 0.006 | ||
| Potassium excretion, mg/24 h | ||||
| Q1 | 1.00 | 1.00 | ||
| Q2 | 1.24 | 0.73–2.12 | 1.39 | 0.80–2.40 |
| Q3 | 1.47 | 0.87–2.48 | 1.52 | 0.89–2.61 |
| Q4 | 1.50 | 0.89–2.53 | 1.66 | 0.97–2.84 |
| P for trend | 0.117 | 0.100 | ||
| Sodium-to-potassium ratio | ||||
| Q1 | 1.00 | 1.00 | ||
| Q2 | 0.86 | 0.50–1.47 | 0.74 | 0.43–1.28 |
| Q3 | 1.47 | 0.90–2.39 | 1.29 | 0.78–2.13 |
| Q4 | 0.86 | 0.50–1.48 | 0.71 | 0.41–1.24 |
| P for trend | 0.911 | 0.565 | ||
Q indicates quartile, OR indicates odds ratio, CI indicates confidence interval;
Model 1 adjusted for age and sex;
Model 2 adjusted for age, sex, smoking, drinking, physical activity, BMI, hypertension, diabetes, dyslipidemia and antihypertensive medication use.