Survey of olfactory disorders using the Japanese national database

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-jRCT1041260031

Enrollment

500000

Registered

2026-05-19

Start date

2026-05-19

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Olfactory disorders

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients suffering from olfactory disorders between April 2009 and June 2025

Exclusion criteria

Exclusion criteria: No setting

Design outcomes

Primary

Measure	Time frame
Prescription rates by type of drug therapy and their changes over time, incidence of comorbid symptoms, implementation status of olfactory function tests, and distribution of olfactory testing by region and medical institution	—

Contacts

Public ContactKaori Mizushima

TSUMURA & CO.

tsu_jp_rd_ds01@mail.tsumura.co.jp+81-3-6361-7200

Outcome results