Table 6.
Urinary Na+, K+, Ca2+, and Mg2+ Excretion by Drinking Water Salinity Categories
| Urinary Minerals | All Person‐Visits | Person‐Visits of Fresh Water Drinkers | Person‐Visits of Mild‐Salinity Water Drinkers | Person‐Visits of Moderate‐Salinity Water Drinkers |
|---|---|---|---|---|
| Urinary Na+ | ||||
| Mean (SD) | 165 (74) | 155 (73) | 166 (69) | 172 (83) |
| Median (IQR) | 154 (114–203) | 144 (108–191) | 158 (118–204) | 160 (112–218) |
| Urinary K+ | ||||
| Mean (SD) | 34 (15) | 34 (15) | 35 (15) | 33 (16) |
| Median (IQR) | 32 (24–42) | 32 (24–43) | 33 (24–42) | 30 (22–40) |
| Urinary Ca2+ | ||||
| Mean (SD) | 4 (3) | 3.2 (2.8) | 4.3 (3.1) | 3.4 (3.0) |
| Median (IQR) | 3 (1.6–5.1) | 2.5 (1.3–4.3) | 3.6 (2.1–5.7) | 2.6 (1.3–4.6) |
| Urinary Mg2+ | ||||
| Mean (SD) | 4 (3) | 3.3 (2.6) | 4.0 (2.8) | 4.0 (3.0) |
| Median (IQR) | 3.3 (2.1–4.8) | 2.8 (1.7–4.2) | 3.6 (2.4–5.0) | 3.5 (2.1–5.1) |
IQR indicates interquartile range.