Table 2.
Distribution of basic diseases in each group of hospitalised older patients [n (%)]
| Mild hyponatremia group (N = 2882) |
Moderate hyponatremia group (N = 1037) | Severe hyponatremia group (N = 445) | Total (N = 4364) | |
|---|---|---|---|---|
| Respiratory diseases | 732 (25.4) | 272 (26.2) | 87 (19.6)*# | 1091 (25.0) |
| Tumours | 651 (22.6) | 230 (22.2) | 128 (28.8)*# | 1009 (23.1) |
| Cardiovascular diseases | 593 (20.6) | 198 (19.1) | 77 (17.3) | 868 (19.9) |
| Central nervous system diseases | 196 (6.8) | 118 (11.4)* | 73 (16.4)*# | 387 (8.9) |
| Kidney diseases | 110 (3.8) | 49 (4.7) | 9 (2.0)# | 168 (3.9) |
| Digestive diseases | 70 (2.4) | 29 (2.8) | 26 (5.8)*# | 125 (2.9) |
| Endocrine diseases | 31 (1.1) | 11 (1.1) | 2 (0.5) | 44 (1.0) |
| Hepatobiliary diseases | 180 (6.3) | 43 (4.2)* | 15 (3.4)* | 238 (5.5) |
| General surgical diseases | 42 (1.5) | 17 (1.6) | 6 (1.4) | 65 (1.5) |
| Urological diseases | 37 (1.3) | 14 (1.4) | 4 (0.9) | 55 (1.3) |
| Orthopaedic diseases | 203 (7.0) | 45 (4.3)* | 18 (4.0)* | 266 (6.1) |
| Others | 37 (1.3) | 11 (1.1) | 0 (0.0) | 48 (1.1) |
*P < 0.05, comparison with mild hyponatremia group
#P < 0.05, comparison with moderate hyponatremia group