['This study aimed to evaluate the association of chronic rhinosinusitis with sudden sensorineural hearing loss using a population-based database.', 'Sampled subject data were obtained from the Taiwan Longitudinal Health Insurance Database 2000. A total of 3325 patients with sudden sensorineural hearing loss were identified and 9975 controls were randomly selected. A conditional logistic regression was used to calculate the odds ratio for having been previously diagnosed with chronic rhinosinusitis, for cases and controls.'] Is sudden sensorineural hearing loss associated with chronic rhinosinusitis : population-based study?