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. 2011 Jan 26;15(1):R39. doi: 10.1186/cc10001

Table 3.

Discrimination of STSS score groupings in predicting death, ICU admission, and need for mechanical ventilation in our study population (n = 62) and the derivation population (n = 3,206)

STSS score Mortality,
fraction (percentage)
Need for ICU Need for MV,
fraction (percentage)



Derivation groupa
n = 3,206
Study group
n = 62
Derivation
groupa, fraction (percentage)
Study group,
fraction (percentage)
Study bed days, median (range) Derivation groupa Study group
0 5/1,144 (0.4) 0/19 (0) 61/1,144 (5.3) 1/19 (5.3) 4 18/1,144 (1.6) 0/19 (0)
1 45/1,257 (3.6) 0/21 (0) 124/1,257 (9.9) 2/21 (9.5) 3 (2-4) 37/1,257 (2.9) 0/21 (0)
2 54/617 (8.8) 2/13 (15.3) 140/617 (23) 7/13 (53.8) 9 (2-46) 43/617 (7) 1/13 (7.7)
≥ 3 47/188 (25) 1/9 (11.1) 68/188 (36) 8/9 (88.8) 8 (3-24) 25/188 (13) 4/9 (44.4)
ROC
AUC
(95% CI)
0.8 Sample too small 0.7 0.88
(0.78-0.98)b
- 0.69 0.91
(0.83-0.99)b

aTalmor and colleagues [14]; bFigure 2: Receiver operating characteristic (ROC) curves for Simple Triage Scoring System (STSS) versus intensive care unit (ICU) and STSS versus mechanical ventilation (MV). AUC, area under the curve; CI, confidence interval.