Table S2. Thirteen-item delirium observation screening scale.

The patient		Day shift			Evening shift			Night shift
		Never	Sometimes-always	Unable	Never	Sometimes-always	Unable	Never	Sometimes-always	Unable
1	Dozes of during conversation or activities	0	1	-	0	1	-	0	1	-	Total score today (0−39)
2	Is easy distracted by stimuli from the environment	0	1	-	0	1	-	0	1	-
3	Maintains attention to conversation or action	1	0	-	1	0	-	1	0	-
4	Does not finish question or answer	0	1	-	0	1	-	0	1	-
5	Gives answers that do not fit the question	0	1	-	0	1	-	0	1	-
6	Reacts slowly to instructions	0	1	-	0	1	-	0	1	-
7	Thinks to be somewhere else	0	1	-	0	1	-	0	1	-
8	Knows which part of the day it is	1	0	-	1	0	-	1	0	-
9	Remembers recent event	1	0	-	1	0	-	1	0	-
10	Is picking, disorderly, restless	0	1	-	0	1	-	0	1	-
11	Pulls iv-tubes, feeding tubes, catheters etc.	0	1	-	0	1	-	0	1	-
12	Is easy or sudden emotional	0	1	-	0	1	-	0	1	-
13	Sees/hears things which are not there	0	1	-	0	1	-	0	1	-
Total score per shift (0−13)
Doss final score = total score today / 3
DOSS final SCORE		< 3					Not delirious
		≥ 3					Probably delirious

DOSS: delirium observation screening scale.