Table 2.

Unadjusted and adjusted associations between relevant factors related to calcium homeostasis and risk of sudden cardiac arrest

ParameterUnadjusted OR (95% CI)P ValueAdjusteda OR (95% CI)P Value
Predialysis corrected serum calcium (per 1 mg/dl increase)1.10 (1.00–1.20)0.051.10 (1.00–1.30)0.05
Dialysate calcium<2.5 meq/L2.00 (1.40–2.80)<0.0012.00 (1.40–2.90)<0.001
Serum-to-dialysate calcium gradient (per 1 meq/L increase)1.40 (1.10–1.60)<0.0011.40 (1.10–1.80)0.002
QT medication exposure1.20 (1.00–1.50)0.061.00 (0.80–1.30)0.80
  • a Adjusted for history of coronary artery disease or congestive heart failure; number of years on dialysis; prescription of calcium-containing medication, vitamin D, antiarrhythmic medication, angiotensin-converting enzyme inhibitor/angiotensin receptor blocker, and β-blockers; potassium dialysate assignment and percent fluid removed during treatment; and serum potassium, bicarbonate, creatinine, albumin, and hemoglobin values.