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Table 2 Performance of variables in predicting ICU mortalitya

From: Relationship between thyroid function and ICU mortality: a prospective observation study

Variable AUC ROC P value Cutoff value Sensitivity (%) Specificity (%)
TT3 0.722 ± 0.33 < 0.001 ≤ 0.965 71.28 63.74
TT4 0.680 ± 0.031 < 0.001 ≤ 7.04 57.18 72.53
FT3 0.762 ± 0.028 < 0.001 ≤ 3.33 62.14 78.02
FT4 0.625 ± 0.035 < 0.001 ≤ 13.63 74.93 49.46
rT3 0.529 ± 0.035 0.405    
TSH 0.603 ± 0.034 0.002 ≤ 0.815 54.04 71.33
T3/rT3 0.617 ± 0.035 0.001 ≤ 2.31 72.53 45.79
APACHE II score 0.829 ± 0.022 < 0.001 ≥ 15 74.22 75.00
NT-proBNP 0.724 ± 0.030 < 0.001 ≥ 5191 73.07 68.54
CRP 0.689 ± 0.030 < 0.001 ≥ 66.5 69.66 61.11
  1. aAUC ROC, area under the receiver operating characteristic curve; APACHE II score, Acute Physiology and Chronic Health Evaluation II score; CRP, C-reactive protein; FT3, free triiodothyronine; FT4, free thyroxine; NT-proBNP, N-terminal pro-brain natriuretic peptide; rT3, reverse triiodothyronine; TSH, thyroid-stimulating-hormone; TT3, total triiodothyronine; TT4, total thyroxine; T3/rT3, the ratio of rT3 to T3.