Comparison of novel tools with traditional cognitive tests in detecting delirium in elderly medical patients

Table 1 Demographic and clinical data for the total group and four neurocognitive groups (mean + SD)

	Total group (n = 180)	Delirium (n = 44)	Comorbid delirium-dementia (n = 60)	Dementia (n = 30)	No neurocognitive disorder (n = 46)
Female (%)	51%	53%	56%	37%	48%
Age	79.6 ± 7.2	77.7 ± 8.4	80.1 ± 7.0	81.8 ± 4.6	79.3 ± 7.5
Total number of medications	10.1 ± 4.7	10.0 ± 4.2	10.3 ± 5.0	9.7 ± 4.4	10.3 ± 5.1
Number of psychotropics2	1.7 ± 1.6	1.9 ± 1.6	2.2 ± 1.7	1.7 ± 1.6	0.8 ± 1.1
DRS-R98 total12	17.0 ± 9.2	22.9 ± 5.7	24.0 ± 6.0	10.9 ± 4.4	6.5 ± 3.3
Short IQCODE3	3.7 ± 0.7	3.1 ± 0.1	4.4 ± 0.5	4.0 ± 0.5	3.1 ± 0.1

¹Delirium and comorbid delirium-dementia > dementia at P < 0.001.

²Delirium-only, dementia-only and comorbid delirium-dementia groups > no neurocognitive diagnosis (NNCD) at P < 0.001.

³Dementia and comorbid delirium-dementia groups > delirium and NNCD groups at P < 0.001. DRS-R98: Delirium Rating Scale-Revised-98; IQCODE: Informant Questionnaire on Cognitive Decline in the elderly.