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Impact of Smell Testing on Health Outcomes

M

Monell Chemical Senses Center

Status and phase

Not yet enrolling
Phase 2

Conditions

Wellbeing
Olfactory Dysfunction

Treatments

Behavioral: Patient-centered information and education

Study type

Interventional

Funder types

Other
NIH

Identifiers

NCT07222891
856831
R44DC022498 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

Smell dysfunction is frequent yet neglected. The sense of smell plays a crucial role in signaling disease, safety, and overall quality of life. However, the significance of a functional sense of smell in terms of health and well-being is often overlooked until one experiences a loss of smell due to injury or disease. Research demonstrates that individuals are often not self-aware of their smell dysfunction (i.e. they do not spontaneously report smell dysfunction as a symptom), especially if the changes are gradual, as in normal aging. Patients with smell dysfunction experience a marked reduction in quality of life, poor mental health, nutritional health, and brain health as well as increased 5- and 10-year mortality in older adults. This study explores whether or not enabling healthcare providers to offer resources and guidance on coping strategies for smell dysfunction improves health and wellbeing in those who experience it.

Full description

The investigators will recruit participants in cycles for in person or remote participation. Each cycle is characterized by an initial assessment, intervention deployment (smell testing), post-intervention evaluation, 1-month and 6-month follow-ups via survey, text or phone to assess post-intervention psychological health and connection to care for smell dysfunction. The research team will assess odor detection, intensity, identification, pleasantness and discrimination. Based on the cut-offs determined prior to the beginning of data collection, the investigators will prospectively assign a participant to the smell dysfunction group or to the normosmia (no smell dysfunction) group. Based on this diagnostic intervention, participants with smell dysfunction will receive patient-centered information and education about i) community engagement with individuals with smell loss, ii) available counseling and iii) medical support. At the end of the 1-month and 6-month follow-up periods, the investigators will assess effectiveness of the intervention using pre-post comparisons to determine whether individuals taking a smell test felt improvements in their psychological health and whether they have contacted a provider and/or followed up with a visit.

Sessions may include multiple surveys/instruments depending on the session number. Specifically, emotional ratings and demographic information will be collected by means of either a paper - or computer-based questionnaire. A survey to measure psychological health and quality of life will be given to participants, as well as a questionnaire to measure depression, which is associated with smell dysfunction. Participants will answer questions about how they are feeling and how ready they are to contact a healthcare provider. The specific smell tests that will be given to participants will be either SCENTinel, NIH Toolbox, Arohma, or the B-SIT test. Other Follow-Up Questions include ones regarding access to care, contacting a provider, seeing a provider, and satisfaction with care.

Enrollment

1,000 estimated patients

Sex

All

Ages

7+ years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

- Can read and understand English and have access to a reliable internet connection and a smart device or computer for the duration of the experimental sessions, unless they are part of community events in which smart devices are provided

Exclusion criteria

- Known intolerance or allergy to any of the odor stimuli used

Trial design

Primary purpose

Supportive Care

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Quadruple Blind

1,000 participants in 2 patient groups

Smell dysfunction detection and educational intervention
Experimental group
Description:
Participants will take smell tests and receive educational materials on smell dysfunction.
Treatment:
Behavioral: Patient-centered information and education
Normosmia
No Intervention group
Description:
No intervention

Trial contacts and locations

1

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Central trial contact

Pamela Dalton; Valentina Parma

Data sourced from clinicaltrials.gov

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