Table 2.

The most contributory factor for etiology of delirium

Drug intoxication	141 (5.7)
Alcohol withdrawal	47 (1.9)
Drug withdrawal	16 (0.7)
Metabolic/endocrine disturbance	56 (2.3)
Traumatic brain injury	39 (1.6)
Seizures	4 (0.2)
Infection (intracranial)	14 (0.6)
Infection (systemic)	246 (10)
Neoplasm (intracranial)	71 (2.9)
Neoplasm (systemic)	262 (11)
Cerebrovascular	143 (5.8)
Heart failure	172 (7.0)
Respiratory failure	126 (5.1)
Liver failure	65 (2.6)
Renal failure	65 (2.6)
Parkinson’s disease	14 (0.6)
Other central nervous system disease	56 (2.3)
Radiation	7 (0.3)
Fracture	101 (4.1)
Postoperative	480 (20)
Connective tissue disease	17 (0.7)
Environmental change	164 (6.7)
Other	147 (6.0)

The most contributory factor for each patient was listed.