Table 2.

Association between serum total calcium and 28-day mortality in patients with sepsis

Variables	Model I, HR (95% CI)	Model II, HR (95% CI)	Model III, HR (95% CI)
Serum total calcium	0.88 (0.82–0.94) *	0.91 (0.85–0.98) *	0.82 (0.76–0.88) *
Serum total calcium quintiles
Q1 (≤8.20)	2.36 (1.97–2.81) *	2.22 (1.86–2.65) *	2.12 (1.76–2.56) *
Q2 (8.30–8.60)	1.04 (0.85–1.27)	0.99 (0.81–1.22)	1.04 (0.84–1.27)
Q3 (8.70–8.90)	1.04 (0.84–1.28)	1.01 (0.82–1.24)	0.98 (0.79–1.21)
Q4 (9.00–9.50)	Ref	Ref	Ref
Q5 (≥9.60)	1.28 (1.06–1.54) *	1.34 (1.11–1.61) *	1.02 (0.83–1.24)
P for trend	<0.001	<0.001	<0.001

*P value <0.05.

Model I: adjusted for none.

Model II: adjusted for age, sex, and BMI.

Model III: adjusted for age, sex, BMI, ethnicity, SOFA, LODS, SAPSII, SIRS, heart rate, SBP, DBP, MAP, respiratory rate, temperature, Spo₂, ventilation, CRRT, vasopressor, neurological disease, metastatic cancer, Pco₂, PO₂, pH, potassium, sodium, lactate, Cr, BUN, RBC, hemoglobin, PLT, APTT, INR, PT, and Alb.

CI, confidence interval; HR, hazard ratio; Ref, reference.