Research report
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Section epidemiology · Version 2026-09-01 · Cadence annual · Evidence class 2 published · Sources 7 · Supersedes none
Domain: chronic-subjective-tinnitus-neuromodulation · Scope: Public primary sources reachable by this repo's connectors, WebSearch and WebFetch, scoped to the US adult population the domain dossier defines. Excludes non-US/non-EU jurisdictions (no connector exists), fda.gov guidance documents (intermittent bot mitigation), and any source without a resolvable identifier — the NIDCD "Prevalence of Chronic Tinnitus" fact page was located and read but excluded on that basis (see Section 5).
Sourcing: Rests on independent NHIS and NHANES cross-sectional analyses of US adults plus one military hearing-conservation cohort; no severity-banded (THI/TFI-validated) prevalence study or general-population incidence study was located.
Chronic subjective tinnitus is common and heterogeneous: independent national US surveys put overall 12-month prevalence among adults somewhere in the low-to-mid teens by percentage, but the share of that population who describe it as a severe or "big" problem — the population closer to what a moderate-or-greater-severity indicated device targets — is consistently a small single-digit fraction of survey respondents rather than of tinnitus sufferers. No study located in this pass reports a true population-level incidence rate (new cases per year) for US civilian adults; the closest available figure comes from a single military cohort. The one study located that directly measures change over time — restricted to adults aged 18–24 — found prevalence and duration both increased between 2008 and 2023. Demographic concentration is real but modest: age and body-mass index are the most consistently reported correlates, and the reported racial/ethnic pattern runs opposite to the more familiar pattern for hearing loss.
_Baseline (v1). No prior version; this establishes the starting point for future diffs._
Chronic subjective tinnitus is the perception of sound without an external acoustic source, persisting long enough and troubling enough to bring a person into care; the American Academy of Otolaryngology–Head and Neck Surgery Foundation's 2014 clinical practice guideline frames its 13 recommendations around "persistent, bothersome tinnitus" after ruling out an underlying treatable cause [7]. The guideline itself does not appear, at abstract depth, to specify a numeric duration threshold for "chronic" — that definitional detail was not located in this pass and is recorded as a gap below, not a finding. [single-source]
Two independent national surveys, run a decade apart and using different instruments, put overall past-12-month tinnitus prevalence in different but broadly overlapping ranges. The 2007 National Health Interview Survey (NHIS) found 9.6% (SE 0.3%) of an estimated 222.1 million (SE 3.4 million) US adults — 21.4 million (SE 3.4 million) people, raw n=75,764 respondents — reported tinnitus in the past 12 months [1]. [single-source] A later analysis pooling the 2011– 2012 and 2015–2016 National Health and Nutrition Examination Survey (NHANES) cycles, n=8,029, found 16.32% reported "any tinnitus" [2]. [single-source] The two figures are not the same quantity — different survey instruments, years and self-report questions — and should not be read as a single converging prevalence estimate; the gap between them is itself informative about how sensitive tinnitus prevalence figures are to how the question is asked.
Both surveys agree that most people who report any tinnitus do not report it as severe. In the 2007 NHIS, of those with tinnitus, 7.2% called it "a big or a very big problem," 41.6% "a small problem," and 31% said they were "not bothered" [1]. [single-source] In the pooled 2011–2016 NHANES sample, only 1.38% of the full 8,029-respondent sample — not just those with any tinnitus — reported it as "a big problem or worse" [2]. [single-source] A Cochrane systematic review's own background statement, itself citing sources not independently traced here, puts severe tinnitus at "1% to 3%" of the adult population [6]. [single-source] Read together, these independently-arrived-at figures — 7.2% of tinnitus sufferers (not all adults) in one survey, 1.38% of all adults in another, and a 1–3%-of-adults range in a third document — converge on the same order of magnitude (low single digits of the general adult population) for severe/"big problem" tinnitus, even though none of the three used a validated severity instrument (THI/TFI) matching the moderate-or-greater threshold a bimodal-neuromodulation indication would use. No source located in this pass reports a THI- or TFI-banded prevalence figure for US adults specifically.
No general-population, prospective incidence study (new cases of chronic subjective tinnitus per year, per capita) for US civilian adults was located. The closest available figure is a retrospective study of US Army hearing-conservation records: among 730,350 Active Duty Soldiers under annual audiometric surveillance, 16.7% self-reported new-onset "bothersome" tinnitus at some point in the study period, and of those, only 7.1% went on to receive a formal tinnitus diagnosis in their medical record [5]. [single-source] This is a noise-exposed, working-age, majority-male military population, not the general US adult population the domain dossier defines, and the 16.7% figure covers self-report of new onset, not a clinician-confirmed diagnosis rate — the study's own point is that the two numbers differ by more than a factor of two [5].
The only study located that directly compares prevalence across two points in time restricts its cohort to adults aged 18–24: comparing the 2008 and 2023 NHIS cycles, 12-month tinnitus prevalence in that age band rose from 5.8% to 7.8% (P=.030), and self-reported duration of tinnitus symptoms also increased (P<.001) over the same period; in 2023 an estimated 2.30 million young adults reported tinnitus, with very loud sound exposure carrying an odds ratio of 2.6 (95% CI 1.7–3.9) [3]. [single-source] The same Army hearing-conservation study separately reports that the percentage of soldiers reporting bothersome tinnitus rose across calendar years of its study period, while the percentage with a significant audiometric threshold shift fell over the same period [5]. [single-source] Both trend findings point the same direction — upward — but neither speaks to the general US adult population as a whole: one is restricted to ages 18–24, the other to active-duty military.
A NHANES 1999–2018 analysis (the exact n was not given in the abstract read) found tinnitus was significantly associated with older age (OR=2.04, P<0.001) and higher body-mass index (OR=1.27, P<0.001), with no significant sex difference (P=0.304) [4]. [single-source] The same analysis found Black, Hispanic, and multiracial participants had significantly lower odds of tinnitus than White participants (all P<0.001) — the inverse of the direction that analysis reports for hearing loss, where the same non-White groups also had lower odds relative to White participants, but by a larger margin [4]. [single-source] A separate NHANES-based review found constancy of tinnitus perception (not duration) was the strongest predictor of it being rated "problematic," and that higher BMI, sleep trouble (OR=2.016), and comorbidity count (OR=1.43) were each independently associated with problematic tinnitus [2]. [single-source]
[1] Prevalence, Severity, Exposures, and Treatment Patterns of Tinnitus in the United States — JAMA Otolaryngology–Head & Neck Surgery (published 2016-10-01; accessed 2026-09-01). PMID 27441392 — https://pubmed.ncbi.nlm.nih.gov/27441392/ [peer-reviewed] [2] Prevalence and predictors of problematic tinnitus — International Journal of Audiology (published 2025, month not given in the PubMed record; accessed 2026-09-01). PMID 39030727 — https://pubmed.ncbi.nlm.nih.gov/39030727/ [peer-reviewed] [3] Tinnitus Trends in Young Adults: Prevalence and Duration from 2008 to 2023 — The Annals of Otology, Rhinology, and Laryngology (published 2026-09, day not given in the PubMed record; accessed 2026-09-01). PMID 42089210 — https://pubmed.ncbi.nlm.nih.gov/42089210/ [peer-reviewed] [4] Ethnic, Gender, and Other Demographic Disparities in Cochleovestibular Symptoms in the United States — Otology & Neurotology (published 2026-04-01; accessed 2026-09-01). PMID 41557436 — https://pubmed.ncbi.nlm.nih.gov/41557436/ [peer-reviewed] [5] Incidence of Self-Reported Bothersome Tinnitus Versus Tinnitus Diagnosis Among U.S. Army Soldiers — American Journal of Audiology (published 2024-12-02; accessed 2026-09-01). PMID 39437262 — https://pubmed.ncbi.nlm.nih.gov/39437262/ [peer-reviewed] [6] Cognitive behavioural therapy for tinnitus — Cochrane Database of Systematic Reviews (published 2020-01-08; accessed 2026-09-01). PMID 31912887 — https://pubmed.ncbi.nlm.nih.gov/31912887/ [peer-reviewed] [7] Clinical practice guideline: tinnitus executive summary — Otolaryngology–Head and Neck Surgery (published 2014, month not given in the PubMed record; accessed 2026-09-01). PMID 25274374 — https://pubmed.ncbi.nlm.nih.gov/25274374/ [guideline]
Well established: Nothing in this report rests on two sources reporting the same measured quantity — see "Thin" below. What is well established at the level of a converging pattern (not a single number) is that severe/"big problem" tinnitus is a small single-digit share of the adult population across three independently sourced figures [1][2][6], and that older age and higher BMI are reported correlates of tinnitus prevalence by two independent NHANES-based analyses using different cycle windows [2][4].
Thin: Every specific quantity in Section 3 carries [single-source]: the NHIS 2007 overall and severity-banded prevalence figures [1]; the NHANES 2011–2016 overall and problematic- tinnitus figures [2]; the Cochrane background severity statement [6], which is itself a secondary citation the review does not independently source in the text read; the NHIS 2008-vs-2023 young-adult trend figures [3]; the NHANES 1999–2018 demographic-disparity findings [4]; and the US Army incidence/diagnosis-rate figures [5]. No two sources in this report were found to report the identical measured quantity for the identical population and period.
Rescoped from class 3: None. This report answers a class-2 descriptive-epidemiology question (condition, prevalence, incidence, trend) with no stakeholder-future question posed in the manifest row it fills.
Out of scope: Non-US and non-EU prevalence/incidence data (no connector reaches those jurisdictions, and the domain dossier's population is US adults). CPT-coded utilization counts of tinnitus visits (AMA-licensed, out of scope by standing repo policy). VA/veteran-specific general-population prevalence, as distinct from the VA disability-compensation claims figures the domain dossier already carries in its Section 6 — those are a claims count, not a prevalence estimate, and were not re-attempted here.
Not searched vs. not found: A severity-banded prevalence figure using a validated tinnitus-severity instrument (THI or TFI) matched to a "moderate or greater" threshold was not found by the queries run in this pass (tinnitus prevalence severity United States, tinnitus prevalence NHANES demographic) — it may exist and simply not have surfaced in the top results of a 30-record window against 198 and 46 total matches respectively; it was not searched to exhaustion. A true prospective incidence cohort for the general US adult population was not found at all in any query run. Full text (beyond the structured abstract) of every source in this report was not searched — methods sections, sampling weights, and response rates were not read for any of the seven sources.
[inference] The gap between "any tinnitus" prevalence (roughly 10–16% of US adults, depending on survey [1][2]) and "severe/big problem" prevalence (roughly 1–3% of US adults [1][2][6]) suggests that the population a moderate-or-greater-severity bimodal-neuromodulation indication actually addresses is an order of magnitude smaller than headline tinnitus prevalence figures imply — this is the writer's synthesis of the pattern across sources above, not a quantity any single source reports.
| Proposition | Evidence class | Resolvable identifier | Dossier section |
|---|---|---|---|
| 12-month tinnitus prevalence among US adults was 9.6% (SE 0.3%), an estimated 21.4 million of 222.1 million adults ≥18, per the 2007 National Health Interview Survey (raw n=75,764) | 2 published | PMID 27441392 | 1 Condition & epidemiology |
| In pooled NHANES 2011–2012 and 2015–2016 data (n=8,029), 16.32% of respondents reported any tinnitus but only 1.38% reported it as "a big problem or worse" | 2 published | PMID 39030727 | 1 Condition & epidemiology |
| NHIS data show 12-month tinnitus prevalence among US adults aged 18–24 increased from 5.8% in 2008 to 7.8% in 2023 (P=.030), with a concurrent increase in self-reported symptom duration (P<.001) | 2 published | PMID 42089210 | 1 Condition & epidemiology |
| Among 730,350 US Army Active Duty Soldiers under annual audiometric surveillance, 16.7% self-reported new-onset bothersome tinnitus, of whom only 7.1% received a formal tinnitus diagnosis in their medical record | 2 published | PMID 39437262 | 1 Condition & epidemiology |
| A NHANES 1999–2018 analysis found tinnitus prevalence significantly associated with older age (OR=2.04, P<0.001) and higher BMI (OR=1.27, P<0.001), no significant sex difference (P=0.304), and significantly lower odds among Black, Hispanic, and multiracial participants versus White participants (all P<0.001) | 2 published | PMID 41557436 | 1 Condition & epidemiology |