Table 4.

Independent predictors of delirium in ICU derived from multivariate regression analysis performed on the derivation cohort

Risk factor	β coefficient	SE	Wald value	OR	RR (95% CI)	P	Points in weighted scoring mode
History of hypertension	1.474	0.636	5.374	4.367	1.256–15.188	0.02	3
Hypoxaemia	1.219	0.513	5.642	3.382	1.237–9.245	0.018	2
Use of benzodiazepines	1.505	0.605	6.181	4.503	1.375–14.746	0.013	3
Deep sedation	1.206	0.610	3.909	3.339	1.011–11.035	0.048	2
Mechanical ventilation	1.266	0.043	4.338	3.547	1.077–11.679	0.037	2
Sepsis	1.247	0.471	7.020	3.480	1.383–8.745	0.008	2