Table 1.

HITD vs HIT results based on individual bin approach.

Side	Affected				Healthy
HITD/HIT	++	+−	−+	–	++	+−	−+	–
Vestibular neuritis	3 (42)	1 (14)	2 (28)	1 (14)	2 (28)	2 (28)	0	3 (42)
Ménière	2 (40)	2 (40)	0	1(20)	1 (20)	3 (60)	0	1 (20)
Unilateral deficit	8 (57)	4 (28)	0	2 (14)	4 (28)	5 (35)	0	5 (35)
Bilateral deficit	9 (63)	2 (14)	2 (14)	1 (7)
Central	0	6 (50)	0	6 (50)

The table shows for each of the different diagnostic groups the number (and, in parentheses, the percentage) of subjects with an abnormal (positive) or normal (negative) HITD (first + or − digit) or HIT (second + or − digit) test both for the affected and the healthy side. For the Bilateral deficit and the Central groups both sides were considered to be as potentially affected. HITD was evaluated by using the individual bin approach, namely the patient was compared to controls for each of the six acceleration bins and was considered abnormal if HITD was abnormal for at least one bin.