MedDataX Logo

Healthful Diets and Risk of Hearing Loss

NCT ID: NCT03351023

Last Updated: 2017-11-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Total Enrollment

70966 participants

Study Classification

OBSERVATIONAL

Study Start Date

1991-07-01

Study Completion Date

2013-06-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

To prospectively examine the relations between adherence scores for three healthful dietary patterns, the Alternate Mediterranean diet (AMED), the Dietary Approaches to Stop Hypertension (DASH), and the Alternative Healthy Eating Index (AHEI-2010), and risk of hearing loss in the Nurses' Health Study II.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Hearing Loss

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Nurses' Health Study II

Nurses' Health Study II, an ongoing cohort study of 116,430 female registered nurses in the US, aged 25-42 at enrollment in 1989. Participants have been followed by biennial mailed questionnaires that elicit updated information on diet, lifestyle, and various health outcomes; the follow-up rate over 26 years exceeds 90% of the eligible person-time.

no intervention-this was an observational study

Intervention Type OTHER

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

no intervention-this was an observational study

Intervention Type OTHER

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* The investigators limited the study to women who provided information on their hearing on the 2009 or 2013 questionnaire.

Exclusion Criteria

* The investigators excluded those who did not provide responses to the hearing questions on either questionnaire, reported a hearing problem that began before baseline for the current analysis (1991) or did not report date of onset, or reported cancer other than non-melanoma skin cancer. The investigators also excluded women who did not complete the baseline diet questionnaire and who had missing diet information for each subsequent time period.
Minimum Eligible Age

27 Years

Maximum Eligible Age

66 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Brigham and Women's Hospital

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Gary C Curhan

Professor of Medicine

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Gary Curhan, MD, ScD

Role: PRINCIPAL_INVESTIGATOR

Brigham and Women's Hospital/Harvard Medical School

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

2007P000876

Identifier Type: -

Identifier Source: org_study_id