Table 2:

Significance according to the risk factor criteria for delirium among ICU patients

Factors	Variables	n			Significance	Ref. No.
		total	+	−
Demographic	Education level	10	6	4	+/−/−/+/−/+/+/−/+/+	8/9/12/23/24/25/27/28/31/33
	Marriage	6	2	4	−/+/+/−/−/−	8/12/23/24/28/29
	Religion	6	0	6	−/−/−/−/−/−	8/12/24/28/29/33
	Job	2	2	0	+/+	12/28
	Economical support	1	1	0	+	12
Patient	Age	18	13	5	−/+/+/+/+/+/−/+/+/+/−/−/+/+/−/+/+/+	1/7/8/12/23/24/25/26/27/28/29/30/31/32/33/34/35
	Gender	16	3	13	−/−/+/−/−/+/+/−/−/−/−/−/−/−/−/−	1/7/8/23/24/25/26/27/28/29/30/31/33/34/35
	Smoking	9	0	9	−/−/−/−/−/−/−/−/−	1/8/12/23/28/30/32
	Drinking	8	1	7	−/−/+/−/−/−/−	1/8/12/23/24/28/30/32
	Use of psychopharmacology	6	4	2	+/−/+/+/−/++	1/12/23/29/31
Disease	Mechanical ventilator	14	9	5	+/+/−/+/+/−/+/−/−/+/−/+/+/+	1/8/9/23/24/25/26/27/28/29/30/31/32/33
	APACHE IIa score	12	10	2	+/+/+/+/+/+/+/−/−/+/+/+	1/7/9/12/23/25/26/27/28/30/31/35
	Comorbidity	11	6	5	−/+/−/−/+/+/+/−/−/+/+	7/8/9/12/24/25/28/30/33/34/35
	Hospital day	9	4	5	−/−/−/−/+/+/+/−/+	8/9/12/24/25/29/31/32/34
	Use of catheter	8	7	1	+/+/+/+/+/+/−/+	1/8/12/23/24/27/34
	Admission	6	5	1	+/+/+/−/+/+	9/12/23/27/31/35
	Artificial airway	5	5	0	+/+/+/+/+	1/12/24/29/35
	Patient severity score	4	4	0	+/+/+/+	12/23/25/31
	Infection	4	3	1	+/+/−/+	12/23/26/31
Surgery	Operation time	3	2	1	−/+/+/	7/12/26
	Operation type	3	1	2	−/+/−/	7/12/30
	PCAb	2	1	1	+/−	12/30
Environment	Restraints	12	10	2	+/+/+/+/−/+/+/+/+/+/+/+	1/9/12/23/24/25/28/29/30/31/33
	Isolation	4	1	3	−/+/−/−	23/12/30/9
	Family visiting	1	1	0	+	12

^aAPACHE II=Acute Physiology and Chronic Health Evaluation II,

^bPCA=Patient controlled analgesia,

⁺=statistically significant,

⁻=not significant