| All patients (n = 81) | |||
|
| % | ||
| Sodium and water depletion | 54 | ||
| SIADH | 30 | ||
| Sodium and water expansion | 14 | ||
| Polydipsia | 11 | ||
| Alcohol abuse | 11 | ||
| Hyperglycemia | 7 | ||
| Patients with defined volume status ( n = 72) | |||
|
| %**(n)* | ||
|
| Hypovolemia (21) | Euvolemia (38) | Hypervolemia (13) |
| Sodium and water depletion | 90 (19) | 58 (22) | 15 (2) |
| SIADH | 14 (3) | 47 (18) | 23 (3) |
| Sodium and water expansion | 0 | 5 (2) | 69 (9) |
| Polydipsia | 10 (2) | 11 (4) | 23 (3) |
| Alcohol abuse | 24 (5) | 5 (2) | 15 (2) |
| Hyperglycemia | 5 (1) | 11 (4) | 8 (1) |