Table 4.
The estimated prevalences in the general population
| Feature | Descriptiona | Sample sizesb (n) | Agec (years) | Estimated prevalence (%) | Ranged | Reliabilitye | References |
|---|---|---|---|---|---|---|---|
| Headache | Headache N.O.S. | > 200 | > 3 | 41.1 | 16–60.2 | 4 | [60–62] |
| Tinnitus | Tinnitus N.O.S. | 4083–15,445 | > 14 | 18.6 | 17–20.3 | 4 | [63, 64] |
| Dizziness | Dizziness N.O.S. | 1003–3267 | > 18 | 18.5 | 16.7–24.2 | 5 | [64–67] |
| Hearing loss | Any objective hearing loss > 25 dB | 3267–7490 | > 18 | 12.9 | 7.2–16.1 | 5 | [66, 68–70] |
| Otalgia | Otalgia not associated with infection or otitis | 411 | > 25 | 12.5 | – | 1 | [71] |
| Aural fullness | Aural fullness not associated with infection | 411–866 | > 25 | 12.4 | 7–17.8 | 2 | [72, 73] |
| Migraine | Migraine (diagnostic criteria) | > 200 | > 3 | 10.5 | 10–11 | 4 | [60–62] |
| Vertigo | Rotational, positional or recurrent vertigo | 1003–4869 | > 18 | 8.4 | 4.9–15.2 | 4 | [64, 65, 74] |
| Falls | Falls without external factors | 2394–3267 | > 40 | 5.5 | 1.5–11.5 | 5 | [64, 66, 67] |
| CPA tumor (radiology) | Cerebellopontine angle tumor on MRI | 2000 | > 45 | 0.2 | – | 1 | [75] |
| EH (histology) | Distension of Reissner’s membrane in vestibule or cochlea | 560–703 | > 0 | 14.3 | 9–19.5 | 4 | [20, 76] |
Data were not available
N.O.S. Not otherwise specified
aSymptom and hydrops descriptions. In case of heterogeneous or missing descriptions, the feature was defined as N.O.S
bLower and upper limits of the combined sample sizes
cLower limit of the combined age samples
dRange of the combined prevalences
eThe reliability of the combined results defined by a 5-point scoring system: 5 = high reliability, 1 = low reliability