Table 1 Each Component and Score Allotment of Japanese version of the NEECHAM Confusion Scale

Subscale 1 Recognition-information processing (14 points)

▪ Attention: Attention-Alertness-Responsiveness (0–4 points)

▪ Command: Recognition-Interpretation-Action (0–5 points)

▪ Orientation: Orientation-Short-term memory-Thought/Speech content (0–5 points)

Subscale 2 Behavior (10 points)

▪ Appearance (0–2 points)

▪ Motor (0–4 points)

▪ Verbal (0–4 points)

Subscale 3 Physiologic control (6 points)

▪ Vital function stability (0–2 points)

▪ Oxygen saturation stability (0–2 points)

▪ Urinary continence control (0–2 points)

Total score (0–30 points)

▪ 0–19 points: Moderate to severe confusion

▪ 20–24 points: Mild or early development of confusion

▪ 25–26 points: “Not Confused,” but at high risk of confusion

▪ 27–30 points: “Not Confused,” or normal function