	All	First half n=54	Second half n=53	P values	Recognised n=64	Unrecognised n=43	P values
12-month mortality	42 (39%)	24 (44%)	18 (34%)	0.27	26 (41%)	16 (37%)	0.72

Delirium recognition improved between the first half of recruitment and the second half of recruitment. There was no difference in age, gender, delirium subtype, dementia status or mortality between halves of recruitment or between recognised and unrecognised delirium.
IQCODE, Informant Questionnaire on Cognitive Decline in the Elderly; LOS, length of stay; NA, not applicable.