The evidence

What the research actually shows

A clinician-facing summary of what supports Kodama’s approach, how much weight each finding can carry, and where the evidence stops. Preliminary, indirect, or limited findings are flagged rather than smoothed over.

36: Named sources
7: Randomized trials
12: Flagged limitations

Bottom line for referrers

Three findings carry the clinical argument

Each claim is paired with the limit that matters before it is quoted, referred from, or applied to Kodama.

Strong evidenceSystematic review / meta-analysis

d = 0.83

95% CI 0.61–1.06

Guided internet-delivered psychological care reduced tinnitus-related distress across pooled trials.

Sattel et al. · Telemedicine and e-Health · 2025

Most, though not all, interventions were CBT-based. The result concerns distress and interference, not tinnitus loudness itself.

Interpret with care

The review pooled different interventions and flagged heterogeneity, dropout, and risk-of-bias concerns. This is evidence for the delivery format broadly, not an outcome measured in Kodama users.

Strong evidenceRandomized noninferiority trial

Noninferior

n = 92 · one trial

Guided digital CBT was not meaningfully worse than individualized face-to-face tinnitus-clinic care.

Beukes et al. · JAMA Otolaryngology–Head & Neck Surgery · 2018

The comparison held within the study’s predefined noninferiority margin for tinnitus distress and most secondary outcomes.

Interpret with care

Noninferiority does not mean the formats are interchangeable for every patient. The trial evaluated a specific guided intervention, not Kodama, and does not establish equivalence for Kodama’s protocol.

Guideline statusCurrent US clinical practice guideline

Recommended

VA/DoD · 2024

CBT is recommended for bothersome tinnitus in the current VA/DoD guideline.

VA/DoD Clinical Practice Guideline for Tinnitus · 2024

The recommendation establishes CBT as a mainstream management approach for tinnitus-related distress.

Scope boundary

The guideline covers tinnitus, not hyperacusis or misophonia. It does not currently recommend for or against web- or app-based self-management specifically because that delivery-format evidence was judged insufficient.

Six-year durability data also exists, but it is uncontrolled and retained 49 of 138 participants (35.5%). It is treated as a preliminary signal, not proof of long-term efficacy. See the limitations.

Scope

Kodama runs three programs, and they don’t share one evidence base. Trial evidence for tinnitus does not automatically validate the hyperacusis or misophonia programs; each condition has its own literature, at a different stage of maturity, summarized below. Reading a strong tinnitus statistic and assuming it applies to hyperacusis or misophonia would be a mistake we don’t want you to make, so we say it here, before the numbers, rather than only in a footnote.

At a glance

Program	Current evidence level	What can reasonably be claimed
Tinnitus	Strongest	CBT can reduce tinnitus-related distress and interference.
Hyperacusis	Preliminary/moderate	CBT may help some presentations; digital evidence is limited.
Misophonia	Early/incomplete	Kodama’s misophonia content is CBT-informed, but this page does not yet make a condition-specific evidence or effectiveness claim for that program.
Kodama itself	Outcomes being collected	No Kodama-specific effectiveness claim yet.

“Current evidence level” reflects how much, how well-controlled, and how directly relevant the published research is to each condition, not how well the program works. Tinnitus has the deepest body of controlled trials behind CBT and internet-delivered care; hyperacusis has fewer trials and almost none in a digital format; misophonia’s CBT-specific literature is still forming. None of that ranks the programs against each other; it describes where the outside research currently stands for each one.

Evidence about Kodama

What we know about Kodama specifically

Everything above and in the library below is evidence about cognitive behavioral therapy and internet-delivered, guided-format care in general; it is not evidence about Kodama. That distinction matters: a strong meta-analysis of other programs tells you the approach is sound, not that Kodama’s particular implementation of it works.

Kodama is currently collecting outcome data from its own participants (validated instruments like the TFI, tracked through the program and, where a referral exists, returned to the referring clinician) but hasn’t yet been the subject of its own published effectiveness study. Until that exists, we don’t make a Kodama-specific effectiveness claim, and the language throughout this page is written to keep that distinction clear rather than let the strength of the underlying literature imply more than we can currently show. When that changes, it will be reflected here and recorded in the change log, not folded quietly into the copy.

Conflict of interest

Kodama has no external funding. Its founder is employed by University Hospitals in ENT and otology/neurotology clinical administration, where she works alongside neurotologists. University Hospitals has no financial relationship with Kodama and has not reviewed, sponsored, or endorsed the program. This professional affiliation is disclosed so readers can evaluate it for themselves. If that changes (a funding relationship, a commercial partnership tied to a claim above), it will be disclosed here and logged in the change log.

Browse the full reference library

↑ Back to summary

Every clinical claim included in this library is linked to a named source; areas not yet fully reviewed are identified explicitly.

Misophonia note

Misophonia-specific sourcing on this page isn’t finalized yet; no misophonia citations appear below. See the full disclosure ↓

How to read the labels

Strong: replicated, controlled, or guideline-level evidence.
Moderate: sound evidence with limits in size, control, or transferability.
Preliminary: promising but unreplicated, uncontrolled, or theoretical.

01 · Question

Is CBT an established treatment for tinnitus distress?

Cognitive behavioral therapy is the treatment with the strongest, broadest evidence base for tinnitus-related distress, not a fringe or alternative approach.

02 · Question

Does the guided, self-paced delivery format hold up?

General CBT evidence is one question; whether an internet-delivered, self-paced, clinician-guided format specifically holds up is another. It does, with one important caveat below.

03 · Question

What mechanism does the program actually target?

Kodama’s program isn’t built around a single model; it draws on a family of related, empirically-tested accounts of how tinnitus distress actually forms and persists.

04 · Question

What underlies the work on attention and unwanted thoughts?

Two specific, testable claims underlie how the program handles attention and unwanted thoughts.

05 · Question

What does the sleep research say?

The program’s sleep guidance runs in two layers: sleep-hygiene basics in Module 3 for everyone, and, when intake screening indicates, a coached Sleep Companion built on the components the evidence actually supports. Here’s the reasoning, sourced.

06 · Question

How does the program measure whether it’s working?

Kodama tracks progress with validated clinical instruments, supplemented by clearly labeled program-developed measures, and is transparent about where the measurement science itself is still settling.

07 · Question

When does something need a clinician first?

A CBT program is the wrong first step for a small number of presentations; the guidance for spotting them is not improvised.

08 · Question

Why is the safety design built the way it is?

Kodama is explicit, everywhere on this site, that it is not an emergency or crisis service. Here is why the built-in safety screening exists rather than being left optional.

09 · Question

Why one unified hyperacusis program?

Kodama’s hyperacusis program doesn’t branch into separate tracks by symptom subtype. Here’s the evidence behind that design decision, and the evidence for the CBT approach itself.

Limits · Question

What we don’t claim

The sources below carry less weight than their effect sizes suggest, collected here so you don’t have to hunt for them. Below that: claims this evidence base does not support.

Claims outside this evidence base

That Kodama reduces the loudness or perception of tinnitus itself. The evidence base is about distress, interference, and quality of life.
That the program replaces medical assessment. Unilateral, pulsatile, or sudden-onset tinnitus needs otologic work-up first.
That results generalize to patients in acute crisis or with untreated severe depression; those cohorts are excluded from the trials cited here.
That hyperacusis-specific digital-format evidence exists at the level tinnitus does; the guided-format RCTs above are tinnitus trials; the one hyperacusis RCT (Jüris 2014) is face-to-face, not digital.

Some areas (misophonia specifically, and a handful of individual program weeks) don’t yet have their sourcing finalized, and nothing gets added here until it’s checked against the original source. That’s deliberate: a page like this is only worth trusting if what’s missing is genuinely missing, not an unstated assumption. See the change log below for exactly what’s been reviewed and when.

Change log

What’s changed on this page

A dated record of substantive changes to this page’s sourcing or claims: new citations, corrected claims, or removed sources. Formatting and copy-editing passes aren’t logged here.

2026-08-18: Page reviewed; current sourcing and claims confirmed as accurate as of this date.