Table 2 Risk of In-Hospital Mortality According to Patient and Stay Characteristics
From: Association between borderline dysnatremia and mortality insight into a new data mining approach
Characteristic | OR (95%CI) | P Value |
|---|---|---|
Serum sodium concentration, mmol/L | ||
  < 125 | 7.95 (5.91–10.53) | <.001 |
 [125;130) | 5.59 (4.62–6.72) | <.001 |
 [130;135) | 3.58 | <.001 |
 [135;145] | 1 [Reference] |  |
 (145;150] | 9.19 (7.06–11.83) | <.001 |
 (150;155] | 10.16 (5.10–18.74) | <.001 |
Age, years | ||
  < 30 | 1 [Reference] | NA |
 [30;40) | 0.66 (0.45–0.97) | .0381 |
 [40;50) | 1.02 (0.74–1.40) | .9256 |
 [50;60) | 1.94 (1.49–2.56) | <.001 |
 [60;70) | 1.83 (1.42–2.41) | <.001 |
 [70;80) | 2.43 (1.88–3.18) | <.001 |
 [80;90) | 4.00 (3.11–5.24) | <.001 |
  ≥ 90 | 6.41 (4.80–8.66) | <.001 |
Sex | ||
 F | 1 [Reference] | NA |
 M | 1.20 (1.09–1.32) | <.001 |
Duration of hospital stay, days | ||
  ≤ 7 | 1 [Reference] | NA |
 (7;14] | 1.59 (1.41–1.80) | <.001 |
 (14;21] | 2.55 (2.19–2.97) | <.001 |
 (21;42] | 4.04 (3.50–4.66) | <.001 |
  > 42 | 5.81 (4.80–6.98) | <.001 |
Number of ICD-10 codes | ||
  ≤ 1 | 1 [Reference] | NA |
 (1;4] | 1.39 (1.08–1.80) | .0112 |
 (4;7] | 3.96 (3.13–5.08) | <.001 |
 (7;10] | 7.34 (5.78–9.44) | <.001 |
 (10;15] | 10.61 (8.32–13.69) | <.001 |
 (15;20] | 18.31 (13.84–24.40) | <.001 |
  > 20 | 31.77 (23.50–43.20) | <.001 |
Hospital admissions via the emergency department | 2.29 (2.04–2.56) | <.001 |
Any surgery | 1.04 (0.94–1.15) | .402 |
ICU stay | 11.85 (10.29–12.69) | <.001 |
Palliative care | 12.75 (10.54–15.38) | <.001 |
Dialysis | 15.49 (13.86–17.30) | <.001 |
Dementia | 2.67 (2.11–3.34) | <.001 |
Charlson Comorbidity Index | ||
 0 | 1 [Reference] | NA |
 1 | 2.72 (2.21–3.36) | <.001 |
 2 | 4.56 (3.76–5.54) | <.001 |
 3–4 | 7.59 (6.31–9.17) | <.001 |
 5–9 | 12.12 (10.11–14.62) | <.001 |
  ≥ 10 | 19.86 (15.31–25.72) | <.001 |