Table 4.
Mean sodium (Na), potassium (K), and sodium to potassium ratio (Na/K ratio) in 24-h urine samples and spot urine samples in 232 men and 243 women aged 40–69 years participating in the seventh wave of in the Tromsø study 2015–2016.
| Na (mmol/l) 1 | K (mmol/l) 2 | Na/K Ratio | |
|---|---|---|---|
| Men | |||
| 24-h urine | 111.0 (40.0) | 62.5 (20.2) | 1.88 (0.70) |
| Spot urine | 110.6 (47.2) | 66.5 (26.6) | 1.92 (1.12) |
| p-value | 0.84 | 0.06 | 0.49 |
| Women | |||
| 24-h urine | 78.6 (34.0) | 46.1 (16.5) | 1.78 (0.68) |
| Spot urine | 85.5 (47.1) | 55.5 (26.1) | 1.74 (0.98) |
| p-value | 0.001 | <0.001 | 0.37 |
1 To convert Na from mmol to gram, multiply by 0.023, 2 To convert K from mmol to gram, multiply by 0.039.