Table 5.

Duration of Delirium and Functional Decline

	Delirium Duration	Functional Decline % (n/N)	p-value*	Unadjusted RR† (95% CI)	Adjusted RR‡ (95% CI)
1-month			<.001	1.7 (1.3, 2.1)	1.6 (1.2, 2.0)
	No Delirium	26% (28/106)
	1-2 Days	42% (23/55)
	≥3 days	74% (14/19)
12-month			0.11	1.3 (0.9, 1.9)	1.1 (0.7, 1.8)
	No Delirium	11% (11/100)
	1-2 Days	24% (13/55)
	≥3 days	13% (3/23)

CI – Confidence Interval

^*p-value calculated with a chi-square test

^†Risk of functional decline by duration calculated with a bivariable Poisson regression

^‡Risk of functional decline by duration after adjustment for age, comorbidity, cognition and baseline IADL score.