21 Oct,2005 China National Sampling Survey of Disability,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,Standard and assessment for hearing disabilities,The hearing professionals group of the second sample survey for the nationally disabled,Dr.SUN Xibin,Hearing disabilities means different degrees of permanent hearing impairments in both ears.There are many causes and reasons for this impairment.Hearing disabled people can not hear or hear clearly environmental sounds so much so that it influences their normal life and involvement in society.,1、definition and classification:,Definition of hearing disabilities,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,There are different degrees of hearing impairments.Hearing disabilities can be divided into four levels:,Classification of hearing disability,International Classification of Functioning,Disability and Health,ICF,1、definition and classification:,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,Classification of hearing disability,The first level:,The structure and function of the hearing system is profoundly damaged.Average hearing level in the better ear is,91,dB HL,.Without a hearing aid,they can only have poor communications and understanding ability only by listening and the result is having little involvement with mainstream society.,Almost hear nothing,1、definition and classification:,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,Classification of hearing disability,The third level：,The structure and function of hearing system is injured moderately.Average hearing level in better ear is,61-80,dB HL,.Without a hearing aid,their communication and ability to understand is influenced moderately and results in moderate involvement in mainstream society.,can hear part of big speech sound,1、definition and classification:,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,The fourth level：,The structure and function of the hearing system is injured mildly to moderately.Average hearing level in the better ear is,41-60,dB HL,.Without a hearing aid,their communication and understanding ability is influenced mildly and results in having some involvement in mainstream society,but not normal involvement.,Classification of hearing disability,1、definition and classification:,can hear but difficult to discrimination,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,Hearing level,（,dB HL)classification of,hearing disability,41-60,The fourth level,61-80,The third level,81-90,The second level,91,The first level,Classification of hearing disability,1、definition and classification:,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,(2)Characteristics of hearing disabilities in a 2006 survey:In this sample survey,hearing disabilities and speech disabilities were defined separately.It was emphasized that hearing disabilities are permanent hearing impairments.This survey considers how much of an influence hearing disabilities has on the ability of the subject to live a normal life and be involved in societal activities.It also expresses the main factor of hearing assessments of ICF.,1.In definition of hearing disability,2、characteristic of this survey,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,2.In classification of hearing disability,(1)the classification in the survey in 1987,WHO1980,Hearing loss dB HL,classification,26-40,mild,41-55,moderate,56-70,moderate to severely,71-90,severely,91,profound,CHINA,-1987,Hard of hearing of Second level,Hard of hearing of First level,Deafness of Second,level,Deafness of First level,21 Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability Oct,2005 China Sampling Survey of Disability,Oct,2005 China Sampling Survey of Disability,Hearing loss(,dB HL,),classification of hearing disability,41-60,fourth level,61-80,third level,81-90,second level,91,