Table 5.

Derivation cohort: variables characterising patient status on admission

Variables	Delirium	No delirium	p Value
Urinary catheter	13 (25)	37 (10.7)	NS
Fluid therapy	29 (55.8)	124 (35.9)	0.009
Vision impairment	36 (69.2)	192 (55.7)	0.072
Hearing impairment	9 (17.3)	87 (25.2)	NS
Oxygen therapy	32 (61.5)	202 (58.6)	NS
Pressure ulcers	3 (5.8)	25 (7.3)	NS
Level of consciousness	5 (21.7)	18 (78.3)	0.20
Dementia	18 (34.6)	49 (14.2)	0.001
Infection	28 (53.8)	141(40.8)	0.097

NS, not significant.