Development of a short olfactory test based on the Connecticut Test (CCCRC)

Area of Science:

• Otolaryngology
• Diagnostic Test Development
• Olfactory Function Assessment

Background:

• Nasal polyposis significantly impacts olfactory function.
• Accurate and efficient smell testing is crucial for diagnosis and management.
• Existing tests may be time-consuming or costly.

Purpose of the Study:

• To develop and validate the Connecticut Smell Test (CST), a brief olfactory assessment tool.
• To evaluate the CST's performance against the Pocket Smell Test (PST).
• To determine the CST's clinical utility, including cost and time efficiency.

Main Methods:

• A prospective patient-based study comparing CST and PST in 40 nasal polyposis patients.
• Assessment of sensitivity, specificity, positive predictive value, and negative predictive value.
• Evaluation of unit cost, performance time, and patient-reported ease of use.

Main Results:

• CST achieved 93.3% sensitivity and 76% specificity.
• Negative predictive value was high at 95%, with a positive predictive value of 70%.
• CST cost €0.65 per test, took 34 seconds, and was rated easy to perform by over 96% of patients.

Conclusions:

• The Connecticut Smell Test (CST) is a valid, rapid, and user-friendly tool for assessing smell in nasal polyposis.
• CST offers a cost-effective and efficient alternative for clinical olfactory evaluation.
• The test's high sensitivity and negative predictive value support its use in this patient population.