Validation of Control Classifications Using the Chronic Rhinosinusitis Control Test as Comprehensive Reflections of...

Area of Science:

• Otolaryngology
• Patient-Reported Outcomes
• Clinical Assessment

Background:

• The Chronic Rhinosinusitis Control Test (CRCT) is a validated patient-reported outcome measure.
• CRCT classifies chronic rhinosinusitis (CRS) into controlled, partly controlled, or uncontrolled categories.

Purpose of the Study:

• To validate CRS control classifications against established clinical benchmarks.
• To demonstrate the correspondence between CRCT classifications and CRS disease burden.

Main Methods:

• 699 CRS patients completed CRCT, Overall Symptom Severity (OSS) scale, SNOT-22, and EQ-5D VAS.
• Endoscopic disease burden was assessed using Modified Lund-Kennedy (MLK) scores.
• Statistical analysis compared scores across CRCT-defined control levels.

Main Results:

• Significant differences in OSS, SNOT-22, EQ-5D VAS, and MLK scores were observed across all CRS control levels (p<0.001).
• Controlled CRS correlated with mild symptoms, minimal QOL impact, and controlled endoscopic findings.
• Uncontrolled CRS correlated with severe symptoms, significant QOL impact, and uncontrolled endoscopic findings.

Conclusions:

• CRCT-derived classifications of CRS control align with key clinical benchmarks.
• The CRCT provides a comprehensive reflection of a patient's CRS symptom severity, QOL, and endoscopic disease burden.