showed a trendp = 0.083
A higher APACHE III score showed a trend toward elevated risk (HR 1.021; 95% CI 0.997–1.046; p = 0.083), whereas non-elective surgery was associated with diminished risk of long-term mortality (HR 0.445; 95% CI 0.135–1.468; p = 0.184), although this association was not statistically significant.