Prevalence of childhood hearing impairment of different severities in urban and rural areas: a nationwide population-based study in Taiwan

Objective Childhood hearing impairment (CHI) is a major developmental disability, but data at the national level are limited, especially those on different severities. We conducted a study to fill this data gap. Design A nationwide study on the basis of a reporting system. Setting To provide services to disabled citizens, the Taiwanese government maintains a registry of certified cases. Using data from this registry, we estimated prevalence...