what percent of deaf babies are born deaf to hearing parents?
About 2 to 3 out of every 1,000 children in the United States are born with a detectable level of hearing loss in one or both ears. 1; More than 90 percent of deaf children are born to hearing parents. 2; Approximately 15% of American adults (37.5 million) aged 18 and over report some trouble hearing. 3