Table 1.

Characteristics of the patients included in the reference standard

Characteristic	Patients Included in the Reference Standard (n = 280)
Age (years), mean ± SD (range)	59.2 ± 15.0 (20–91)
Gender
Man, n (%)	149 (53.2)
Length of ICU stay (days), median (IQR)	4.3 (5.6)
Mortality, n(%)
ICU	23 (8.2)
Hospital	37 (14.4)
Admission class, n (%)
Medical	155 (55.4)
Surgical	78 (27.9)
Neuroscience	22 (7.9)
Trauma	17 (6.1)
No admission category assigned	8 (2.9)

Abbreviation: IQR, interquartile range; SD, standard deviation.