A epidemiology study of hearing and speech disabilities in children of 0-7 years in Shenzhen, China
Objective To know the prevalence of hearing and speech disabilities in children of 0-7 years in Shenzhen, and explore the influence factors. Methods 77727 0-7 years children lived in Shenzhen city were tested in 3 stages screening with the Chinese standard of evaluation in disabilities. Results The prevalence of hearing disability was 1.11‰ and speech disability was 1.88‰ (judged rate with the false negative 1.55‰ was 3.43‰). The prevalence of hearing and speech disabilities was increased with age. The main suspicious agents were lower born weight, abnormal childbirth and suffering diseases during the infant period. Conclusion The prevalence of hearing disability in Shenzhen was lower than that of other samples of China in 1989. The prevalence of speech disability was higher than that of China in 1989. The causes should be confirmed in the future.