The descriptive epidemiology of delirium symptoms in a large population-based cohort study: results from the Medical Research Council Cognitive Function and Ageing Study (MRC CFAS)

Table 3 Cases of study-defined delirium and dementia, with outcomes at two years later

		No delirium (n = 2075)		Delirium (n = 122)
	Age (median, IQR)	76.8	(70.8 – 83.5)	83.2	(75.4 – 87.7)
	Sex (n women, %)	1316	(63)	87	(71)
Dementias at baseline	Cases	425	21%	86	72%
	Denominator	2065		119
	Missing	10		3
Death within two-year interval	Cases	706	34%	72	61%
	Denominator	2065		119
	Missing	10		3
Incident dementia at follow-up two years later	Cases	102	9%	9	45%
	Denominator	1129		20
	Missing (not including deaths)	240		27

Groups described here are from the assessed population, i.e. 20% most cognitively impaired at screen, plus random sample of remainder.
Delirium, as defined through study algorithm.
IQR interquartile range.
Dementia diagnoses from AGECAT.

ISSN: 1471-2318