Table 6 Subgroup analysis of the predictive performance of the five scoring systems for the prediction of mortality

Age

 Age < 65 years

0.611(0.357–0.865)

0.621(0.360–0.883)

0.836(0.639–0.999)

0.836(0.639–0.999)

0.835(0.639–0.999)

 Age ≥ 65 years

0.748(0.671–0.825)

0.747(0.671–0.822)

0.844(0.783–0.904)

0.832(0.771–0.894)

0.849(0.788–0.910)

Comorbidity

 With comorbidity

0.640(0.506–0.773)

0.641(0.510–0.772)

0.766(0.647–0.884)

0.758(0.638–0.878)

0.779(0.662–0.895)

 Without comorbidity

0.681(0.589–0.774)

0.703(0.615–0.791)

0.810(0.731–0.888)

0.792(0.713–0.871)

0.816(0.737–0.895)

Sepsis

 SIRS score < 2

0.442(0.251–0.632)

0.489(0.272–0.705)

0.743(0.548–0.938)

0.728(0.526–0.930)

0.767(0.565–0.968)

 SIRS score ≥ 2

0.622(0.534–0.710)

0.648(0.563–0.733)

0.766(0.684–0.849)

0.741(0.657–0.826)

0.777(0.694–0.860)

 SOFA score < 2

0.557(0.445–0.670)

0.580(0.475–0.685)

0.761(0.660–0.863)

0.731(0.629–0.833)

0.791(0.689–0.893)

 SOFA score ≥ 2

0.628(0.516–0.739)

0.624(0.510–0.738)

0.663(0.545–0.781)

0.661(0.545–0.778)

0.645(0.526–0.764)