TABLE 2. Prevalence of abnormal clinical vestibular tests by age group.

Test	Abnormal test in 70 to 79 age group, n (%)	Abnormal test in ≥80 age group, n (%)	p
Spontaneous nystagmus	0 (0)	0 (0)	NA
Head-shaking nystagmus	1 (3)	0 (0)	1.000
Right horizontal HIT	11 (28)	7 (64)	0.041
Left horizontal HIT	15 (39)	7 (64)	0.178
Right superior HIT	3 (8)	0 (0)	1.000
Left superior HIT	2 (5)	0 (0)	1.000
Right posterior HIT	0 (0)	2 (18)	0.045
Left posterior HIT	3 (8)	3 (27)	0.111
Bilateral horizontal HIT	9 (23)	6 (55)	0.052
Any horizontal HIT	17 (44)	22 (57)	0.088
Condition 4 of the modified Romberg test	23 (59)	11 (100)	0.010
Bucket test	7 (18)	2 (18)	1.000

Significant p values (p < 0.05) are marked in bold. Condition 4 of the modified Romberg test: abnormal if not able to stand on a foam-padded cushion with eyes closed at least 30 seconds in 1 of 2 trials. Spontaneous nystagmus: abnormal if spontaneous nystagmus was present. Head-shaking nystagmus: abnormal if nystagmus was present after shaking head for 40 seconds. Bucket test: abnormal if the average of 5 trials was more than ±3 degrees. HIT; Head Impulse test: abnormal if corrective saccade occurs after passive head impulse in the plane of the canal.