borderline significancep = 0.051
However, after the inclusion of NT-proBNP (Model B), the association of GDF15 with all-cause mortality was attenuated, reaching borderline significance (HR 2.61; 95% CI: (0.99–6.87), p = 0.051), whereas NT-proBNP retained significance (HR 1.11; 95% CI: (1–1.22), p = 0.044) ( Table S2 ). 2.4.