The observational study examining the relationship between climate and the onset of migraine in Japan

The observational study examining the relationship between climate and the onset of migraine in Japan - Weather study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000048688

Enrollment

215319

Registered

2022-09-01

Start date

2022-06-30

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

Migraine

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: - Patients who have been diagnosed with headache based on the following International Classification of Diseases (ICD)-10 codes at least once during the enrollment period ICD10; G43, G440*, G441*, G442*, G443*, G444*, G448* * Headaches other than migraine G43 will also be extracted.

Exclusion criteria

Exclusion criteria: Patients <18 years of age Patients prescribed a total of 120 tablets of triptans per year Patients prescribed a total of 120 tablets of ergotamine per year Patients with comorbidities that may cause secondary headaches

Design outcomes

Primary

Measure	Time frame
[Cross-sectional research study: Case crossover design] -The amount of triptans prescribed in each season [Historical cohort research study] -Date of the first triptan prescription from the index date in the target season	—

Secondary

Measure	Time frame
[Descriptive research study] - The amount of triptans prescribed per year and month stratified by region - Number of patient visits to the medical institution per year and month	—

Countries

Japan

Contacts

Public ContactKentaro Yamato

Otsuka Pharmaceuticals Co., Ltd Medical Affairs Department

Yamato.Kentaro@otsuka.jp03-6717-1400

Outcome results