Hispanic children or those from low-income families are more likely to have hearing loss.
Researchers took a look at five studies conducted between 1966 and 2007.   Lead author of the hearing study was Dr. Donald G. Keamy who is both an instructor at Harvard Medical School and a surgeon at the Massachusetts Eye and Ear Infirmary.  Details are in this month’s issue of Otolaryngology-Head and Neck Surgery. 
Hearing loss is one of the most common birth disorders in the US. Two to four of every 1,000 children are born either deaf or hard-of-hearing.