Association of Initial Serum Total Calcium Concentration with Mortality in Critical Illness

Table 2

Association between admission serum calcium levels and hospital mortality.

Serum Calcium	No. of patients	deaths	Non-adjusted		Model		Model
(mg/dl)			OR (95%CI)	P value	OR (95%CI)	P value	OR (95%CI)	P value
Quintiles
⩽7.6	7,701	1,443	1.84 (1.69, 2.00)	<0.001	1.97 (1.81, 2.15)	<0.001	1.06 (0.96, 1.18)	0.238
7.7-8.1	8,382	1,123	1.23 (1.13, 1.35)	<0.001	1.25 (1.14, 1.36)	<0.001	0.98 (0.89, 1.09)	0.768
8.2-8.5	8,824	1,018	1.04 (0.95, 1.14)	0.405	1.04 (0.95, 1.14)	0.371	0.98 (0.89, 1.09)	0.718
8.6-9.0	10,319	1,151	1.0(ref)		1.0(ref)		1.0(ref)
>9.0	9,760	1,199	1.12 (1.02, 1.22)	0.013	1.15 (1.05, 1.25)	0.002	0.99 (0.89, 1.09)	0.781

OR: odds ratio; CI: confidence interval.
a: model I covariates were adjusted for age and sex.
b: model II covariates were adjusted for age, sex, spo2, SOFA, SIRS, OASIS, SAPSII, SBP, DBP, heart rate, respiratory rate, chronic heart failure, AKI, liver disease, acute pancreatitis, renal replacement therapy, anion gap, creatinine, chloride, glucose, and hemoglobin.