ALB and pulmonary hypertension: COX stepped-regression analysis showed Pulmonary hypertension (OR 2.40; 95% CI 1.24–4.64), LDL (OR 1.48; 95% CI 1.11–1.96), CKMB (OR 1.01; 95% CI 1.01–1.01) was positively associated with the risk of death during follow-up in children with cardiomyopathy, while Weight (OR 0.92; 95% CI 0.88–0.96), ALB (OR 0.94; 95% CI 0.90–0.98), TG (OR 0.52; 95% CI 0.31–0.87), LVEF (OR 0.96; 95% CI 0.93–0.98) was negatively associated with the risk of death during follow-up (Figure 1B, Supplementary Material 6).