Table 3.
Characteristics and biological parameters of the two groups of patients
| Characteristic | Hyponatremia (n = 84) | Normonatremia (n = 48) | p | Odds ratio (95% CI) |
|---|---|---|---|---|
| Fever | 84 (100) | 48 (100) | 0.9a | |
| Sex (female) | 34 (40%) | 11 (23%) | 0.04 | 0.44 (0.19–0.97) |
| Cough | 75 (89%) | 46 (96%) | 0.8a | 2.6 (0.6–19.3) |
| Breathlessness | 77 (92%) | 43 (90%) | 0.4a | 0.8 (0.2–2.8) |
| Fatigue | 60 (71%) | 31 (65%) | 0.4a | 0.7 (0.3–1.6) |
| Sore throat | 41 (49%) | 20 (42%) | 0.4a | 0.8 (0.4–1.5) |
| Headache | 25 (30%) | 18 (38%) | 0.2a | 1.4 (0.7–3.0) |
| Diarrhea | 31 (37%) | 13 (27%) | 0.6a | 0.6 (0.3–1.4) |
| Nausea/vomiting | 16 (19%) | 11 (23%) | 0.5a | 1.3 (0.5–3.0) |
| Anosmia | 23 (27%) | 16 (33%) | 0.03a | 1.3 (0.6–2.9) |
| Admission SpO2 (≤93%) | 68 (82%) | 31 (65%) | 0.03a | 2.5 (1.1–5.7) |
| WHO criteria | ||||
| Moderate | 28 (33%) | 25 (52%) | 0.04a | 2.15 (1.04–4.5) |
| Severe | 53 (63%) | 21 (44%) | 0.03a | 0.45 (0.2–0.94) |
| Critical | 1 (1.2%) | 0 | 0.9b | 4.98 (0.9–127.1) |
| Hospital stays (days), mean (±SD) | 11.5 (±4.4) | 12.0 (±5.2) | 0.5c | – |
| Hb% (g/dl), mean (±SD) | 11.75 (±2.1) | 12.0 (±5.2) | 0.004c | – |
| Neutrophil (%), mean (±SD) | 78 (±11) | 76 (±13) | 0.3c | – |
| Lymphocyte (%), mean (±SD) | 17 (±10) | 18 (±11) | 0.6c | – |
| CRP (mg/L), mean (±SD) | 28 (±26) | 17 (±13) | 0.001c | – |
| Ferritin (μg/L), mean (±SD) | 732 (±869) | 495 (±553) | 0.06c | – |
| D‐dimer (g/L), mean (±SD) | 1.34 (±1.28) | 1.10 (±0.95) | 0.2c | – |
Abbreviations: CI, confidence interval; CRP, C reactive protein; Hb, hemoglobin; n, number; SpO2, percent saturation of oxygen in the blood; WHO, World Health Organization.
a
χ 2 test.
b
Fisher's exact test.
c
Student's t test.