Objective:To describe the regional different factors which impact on early cochlear implantation in prelingual deaf children between eastern and western regions of China.Method:The charts of 113 children who received the cochlear implantation after 24 months old were reviewed and analyzed.Forty-five of them came from the eastern region(Jiangsu,Zhejiang or Shanghai)while 68 of them came from the western region(Ningxia or Guizhou).Parental interviews were conducted to collect information regarding the factors...