Table 2. Univariate and Multivariate Analysis of Factors Affecting K⁺ Value.

Factors affecting K+ value	Univariate	95% confidence interval	Multivariate	95% confidence interval
Change in K+ value pre- and post-transfusion	0.2	0.58 - 1.93	0.3	0.31 - 2.88
Acidosis	0.1	0.22 - 1.67	0.2	0.62 - 3.02
Acute renal failure	0.64	0.28 - 3.33	0.55	0.47 - 2.17
End-stage renal disease	0.52	0.26 - 2.12	0.97	0.91 - 4.92
No. of transfusions	0.11	0.12 - 1.83	0.32	0.48 - 2.25
Age of RBC blood	0.02	0.32 - 0.91	0.04	0.14 - 0.91
K+ infusion via central access vs. peripheral access	0.43	0.75 - 4.17	0.82	0.76 - 3.93