Table 1.

Examination and rating Instructions for the TWSTRS-2 AM item (and, for comparison, Rotation item)

Instructions for the videographer during exam:
Front view of participant doing most effective sensory trick or a trial of touching right cheek, left cheek and back of head
Instructions for the AM item in the TWSTRS-2:
A sensory trick is defined as a touch or other movement that influences the severity of the abnormal movements. This item evaluates the degree of improvement when a sensory trick is used. If the patient is unaware of any sensory trick, a trial of touching the cheek, back of the head, or leaning against a wall should be suggested. The improvement in abnormal movements must last at least 5 seconds following application of the trick. If the duration is less than 5 seconds, the score is 4.
TWSTRS-2 Motor Severity subscale: the AM item and another example item (Rotation)
Sensory Trick	Score	Rotation	Score
Complete improvement of posture by one or more tricks	0	None	0
Moderate improvement of posture by one or more tricks	1	Slight	1
Mild improvement of posture by one or more tricks	2	Mild	2
Minimal improvement of posture by one or more tricks	3	Moderate	3
No improvement of posture by one or more tricks	4	Severe	4