Table 4.

Multivariate Cox regression analysis for all-cause mortality in hemodialysis patients with poor fluid status.

Models	HR	95% CI	p value
25 (OH) Vitamin D deficiency vs. normal 25 (OH) vitamin D: categorical variable
Unadjusted	2.7	1.1–6.8	0.03*
Model 1	2.5	1.0–6.3	0.048*
Model 2	2.6	1.0–6.7	0.04*
Model 3	2.8	1.1–7.1	0.03*
Model 4	2.6	1.0–6.5	0.047*
Model 5	3.1	1.1–9.3	0.04*

Model 1 was adjusted for age (1-year increment) and sex.

Model 2 was adjusted for comorbidities of diabetes mellitus, congestive heart failure and coronary artery disease.

Model 3 was adjusted for cardiothoracic ratio (%).

Model 4 was adjusted for serum albumin (1-g/dL increments).

Model 5 was adjusted for serum creatinine (1-mg/dL increments), hemoglobin (1-g/dL increments), high-sensitivity C-reactive protein (1-mg/L increments), calcium (1-mg/dL increments), phosphate (1-mg/dL increments) and cholesterol (1-mg/dL increments).

*p value <0.05.

Abbreviations: HR, hazard ratio; 95% CI, 95% confidence interval.