The Phenomenology of Delirium: Presence, Severity, and Relationship between Symptoms

Table 2

Delirium phenomenology: prevalence of moderate and severe symptoms in % and mean MDAS scores.

Delirium phenomenology	Mean MDAS scores	Presence in %
(1) Reduced consciousness/awareness	1.89 (1–3, SD 0.62)	75%
(2) Disorientation	2.28 (1–3, SD 0.33)	90%
(3) Short term memory impairment	2.03 (1–3, SD 0.92)	60%
(4) Impaired digit span	2.45 (1–3, SD 0.58)	96%
(5) Reduced ability to maintain/shift attention	2.16 (1–3, SD 0.58)	90%
(6) Disorganized thinking	2.05 (1–3, SD 0.70)	78%
(7) Perceptual disturbances	1.08 (0–3, SD 1.08)	34%
(8) Delusions	0.92 (0–3, SD 0.90)	28%
(9) Psychomotor abnormality	2.22 (1–3, SD 0.50)	96%
(10) Sleep-wake cycle disturbance	2.08 (1–3, SD 0.56)	88%

MDAS: Memorial Delirium Assessment Scale.
SD: standard deviation.