Table 1:
Demographic Characteristics of Study Population, Baltimore Longitudinal Study of Aging (N = 154)
| Mean (SD) | N (%) | |
|---|---|---|
| Sex | ||
| Male | 70 (45.5%) | |
| Female | 84 (54.5%) | |
| Mean age (SD) [Range] | 69.8 (13.6) [24-93] | |
| Mean VOR gain a | 0.98 (0.11) | |
| VOR Hypofunction (< 0.8) | 13 (10%) | |
| cVEMP b | ||
| Normal Function | 92 (61.3%) | |
| Mean Normalized Amplitude | 2.00 (1.05) | |
| Mean p13 Latency (ms) | 13.88 (0.86) | |
| Mean n23 Latency (ms) | 21.13 (1.59) | |
| Abnormal Function | 58 (38.7%) | |
| Unilateral Absent | 32 (21.3%) | |
| Mean Normalized Amplitude | 1.12 (0.88) | |
| Mean p13 Latency (ms) | 13.78 (1.06) | |
| Mean n23 Latency (ms) | 20.09 (1.48) | |
| Bilateral Absent | 26 (17.3%) | |
| oVEMP c | ||
| Normal Function | 113 (74.3%) | |
| Mean Amplitude (microvolts) | 12.94 (8.28) | |
| Mean n10 Latency (ms) | 7.79 (0.78) | |
| Mean p16 Latency (ms) | 12.36 (1.08) | |
| Abnormal Function | 39 (25.7%) | |
| Unilateral Absent | 20 (13.2%) | |
| Mean Amplitude (microvolts) | 6.42 (3.68) | |
| Mean n10 Latency (ms) | 7.97 (1.37) | |
| Mean p16 Latency (ms) | 11.69 (1.04) | |
| Bilateral Absent | 19 (12.5%) | |
a
130 participants completed VOR testing
b
150 participants completed cVEMP testing
c
152 participants completed oVEMP testing