Table 3

Area under the receiver operating characteristic curve for ultimate hospital mortality

Variable

Na

aROC

95% CI


Number of modified Glasgow criteria

2,473

0.669

0.648–0.691


APACHE II score

2,369

0.804

0.786–0.821


Highest serum urea, mmol/l

2,140

0.771

0.751–0.791

Lowest arterial pH

2,288

0.768

0.748–0.788

Highest serum creatinine, μmol/l

2,370

0.763

0.744–0.783

Lowest serum albumin, g/l

1,972

0.682

0.658–0.706

Lowest PaO2/FIO2, kPa

2,291

0.660

0.638–0.683

Lowest total serum calcium, mmol/l

1,663

0.617

0.589–0.645

Lowest platelet count, × 109/l

2,152

0.599

0.574–0.623

Lowest PaO2, kPa

2,291

0.565

0.542–0.589

Highest serum glucose, mmol/l

2,078

0.560

0.534–0.585

Highest total serum bilirubin, μmol/l

1,826

0.545

0.518–0.572

Lowest ionised serum calcium, mmol/l

515

0.527

0.476–0.578

Highest white blood cell count, × 109/l

2,368

0.524

0.500–0.549


aExcluding readmissions within the same hospital stay and admissions missing ultimate hospital outcome. APACHE, Acute Physiology and Chronic Health Evaluation; aROC, area under the receiver operating characteristic curve; CI, confidence interval; FIO2, fractional inspired oxygen; N, number of non-missing observations; PaO2, arterial oxygen tension.

Harrison et al. Critical Care 2007 11(Suppl 1):S1   doi:10.1186/cc5682

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