Results: Phase 1: eight relevant types of ear complaints were identified: earache, pressure in ear, hearing loss, tinnitus, otorrhoea, itch, dizziness and loss of taste.Phase 2: factor analysis generated a factor 'impact' (a = 0.913). The current version of the OQUA consists of 34 items, covers eight types of ear complaints and consists of two constructs: complaints and impact.
Conclusion:The OQUA is a generic, otologic PROM designed to evaluate the severity of ear complaints and their impact on patients lives.