Fig. 2

Restricted cubic spline analyses between nutritional risk and CI-AKI. The restricted cubic spline plot visualizes the association between CI-AKI and nutritional scores, including (A) NRS-2002, (B) CONUT, (C) PNI, and (D) GNRI. The spline model adjusted for underlying clinical confounders, including age (except NRS-2002), gender, diabetes, average SBP, eGFR, LVEF, hemoglobin, C-reactive protein, the volume of contrast agent consumption, the type of contrast agent, pre-procedure medications (statin, furosemide, and dopamine). Abbreviations refer to Fig. 1. *P < 0.05