Table 2 Cox Regression analysis of the association between serum calcium levels and PICU mortality in in pediatric pneumonia.

From: Serum calcium and mortality in pediatric pneumonia patients admitted to the PICU: a retrospective cohort study

Variable

n.event%

Crude

HR (95% CI)

P value

Adjusted

HR (95% CI)

P value

Serum calcium (mmol/dL)

46 (11.1)

0.81 (0.73–0.89)

 < 0.001

0.76 (0.67–0.87)

0.002

Serum calcium tertiles

 T1 (≤ 21.9mmol/dL)

23 (16.8)

1 (Ref)

 

1 (Ref)

 

 T2 (22.0–23.5mmol/dL)

13 (9.6)

0.61 (0.31–1.21)

0.164

0.58 (0.27–1.26)

0.181

 T3 (> 23.6mmol/dL)

10 (7.1)

0.42 (0.2–0.88)

0.026

0.37 (0.16–0.86)

0.03

  1. T, tertiles; HR, hazard ratio; CI, confidence interval; Ref, reference.
  2. Adjusted Model: adjusted for age, sex, WBC (white blood cell count), bacteremia, arterial blood gas (ABG) pH, lactate levels, oxygen saturation, serum potassium, serum sodium, blood urea nitrogen and the use of inotropes.
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