Fig. 3

Kaplan–Meier curves of serum calcium level quartiles. a Serum iCa and 30-day mortality(left panel), serum tCa and 30-day mortality(right panel). b Serum iCa and 90-day mortality(left panel), serum tCa and 90-day mortality(right panel). c Serum iCa and 365-day mortality(left panel), serum tCa and 365-day mortality(right panel). iCa: ionized calcium; tCa: total calcium. (left panel) The deep blue line represents iCa < 1.07 mmol/L; the red line represents 1.07 ≤ iCa <1.12 mmol/L; the green line represents 1.12 ≤ iCa < 1.17 mmol/L; the light blue line represents 1.17 mmol/L≤iCa. (right panel) The deep blue line represents tCa < 7.9 mg/dL; the red line represents 7.8 ≤ tCa < 8.4 mg/dL; the green line represents 8.4 ≤ tCa < 9.0 mg/dL; the light blue line represents 9.0 mg/dL≤ tCa