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Table 1 Delirium Observation Screening scale [34, 35]

From: The effect of a complementary e-learning course on implementation of a quality improvement project regarding care for elderly patients: a stepped wedge trial

  The patient: Never Sometimes or always
1 Dozes during conversation or activities 0 points 1 point
2 Is easily distracted by stimuli from the environment 0 points 1 point
3 Maintains attention to conversation or action 1 point 0 points
4 Does not finish questions or answers 0 points 1 point
5 Gives answers which do not fit the question 0 points 1 point
6 Reacts slowly to instructions 0 points 1 point
7 Thinks to be somewhere else 0 points 1 point
8 Knows which part of the day it is 1 point 0 points
9 Remembers recent events 1 point 0 points
10 Is picking, disorderly, restless 0 points 1 point
11 Pulls IV tubes, feeding tubes, catheters etc. 0 points 1 point
12 Gets easily or suddenly emotional (frightened, angry, irritated) 0 points 1 point
13 Sees persons/things as somebody/something else 0 points 1 point
  1. For each of three daily shifts the total score is calculated; the total score per shift is a minimum of 0 and a maximum of 13; the total score for a day is a minimum 0 and a maximum of 39. The DOS scale final score is calculated by dividing the total score for the day by 3; the DOS final score is between 0 and 13
  2. The cut-off point is 3; a DOS scale final score of 3 or more indicates a delirium