China Disability Classification Standards

 

Two guidelines are followed to formulate these standards:

  1. Social functional handicap is taken as the main indicator, which means the degree of the disability is classified based on the degree of the social functional handicap.
  2. If there have been international unified standards for some parts of these standards, these parts would be formulated as the same with the international ones as possible to facilitate the international academic exchanges and material comparison; if there are no international unified standards for some parts of those standards, these parts would be independently-formulated. So among the five types of disability standards formulated by China, the ones for visual, hearing and speaking disability are almost similar with the international ones; the one for intellectual disability is almost similar too; the one for physical disability is independently-formulated; the one for psychic disability is also formulated in reference with the classification standards for psychological disability provided by the World Health Organization.

For the sampling survey on disabled persons in China conducted in 1987, the definitions and classification standards for the five types of disability are as follows:

I

Visual Disability

It represents a person who has visual impairment or narrowed vision of both eyes due to various causes, so he or she can not work, learn or conduct other activities as a normal person can. Seeing disability includes blindness and weak sight. Please see Table 1-1 for classification for seeing disability.

 

Blindness

Class 1 Blindness: the best corrected visual acuity of the better eye is lower than 0.02, or the vision radius is less than 5 degrees.
Class 2 Blindness: the best corrected visual acuity of the better eye is equal to or higher than 0.02, but lower than 0.05, or the vision radius is less than 10 degrees.

 

Weak Sight

Class 1 weak sight: the best corrected visual acuity of the better eye is equal to or higher than 0.05 but lower than 0.1.
Class 1 weak sight: the best corrected visual acuity of the better eye is equal to or higher than 0.1 but lower than 0.3.

 

Table 1-1 Classification Of Seeing Disability

Type

Class

The best corrected visual acuity of the better eye

Blindness

Class 1 Blindness

<0.02—no light sense,or vision radius<5 degrees

Class 2 Blindness

<0.05--0.02,or vision radius<10 degrees

Weak Sight

Class 1 Weak Sight

<0.1--0.05

Class 1 Weak Sight

<0.3~0.1

Notes:

1. Both blindness and weak sight represent two eyes; if the sights of two eyes are different, those of the better one prevail.

  1. If just one eye is blind or of weak sight, the other eye is equal to or higher than 0.3, then this person should not be classified as seeing disability.

3. The best corrected visual acuity means the best sight achieved through correction with proper lens, or the sight measured with pinhole lens.

II

Hearing And Speaking Disabilities

Hearing disability means both ears of a person lose hearing ability or have hearing impairment due to various causes, so that the person is unable to hear or hear correctly the sound around him. Speaking disability means a person is unable to speak or have speaking impairment, so that the person is unable to communicate normally with the normal persons through speaking language. The hearing and speaking disabilities include:

  1. Total loss of hearing and speaking ability (both deaf and dumb).
  2. Loss of hearing ability, but able to speak or with alalia (deaf but not dumb).
  3. Simplicial speaking impairment, including logomania, oxyphonia, alalia or severe logophasia.

Hearing disability includes deafness and hard of hearing.

 

⒈ Deafness

Class 1 Deafness: the average hearing loss of speech frequency is higher than or equal to 91 dB (dB, hearing level, the followings are the same.)

 

 

Class 2 Deafness: The average hearing loss of speech frequency is higher than 71 dB but equal to or lower than 91 dB.

 

⒉ Hard of Hearing

Class 1 Hard of Hearing: the average hearing loss of speech frequency is higher than 56 dB but equal to or lower than 70 dB.

 

 

Class 1 Hard of Hearing: the average hearing loss of speech frequency is higher than 41 dB but equal to or lower than 55 dB.

 

⒊ Simplicial Speaking Disability

No classification

 

Table 1-2 Classification Of Hearing Disability

Type

Class

Degree Of Hearing Loss

Deafness

Class 1 Deafness

≥91dB

Class 2 Deafness

90-71dB

Hard of Hearing

Class 1 Hard of Hearing

70-56dB

Class 1 Hard of Hearing

55-41dB

Note:

  1. The above mentioned “average hearing loss of speech frequency” refers to the average of the speech frequency of 500, 1000, 2000 HZ respectively.
  2. Both deafness and hard of hearing represent two ears of a person; if the hearing loss of two ears is different, that of the better ear prevails.
  3. If just one ear of a person is of deafness or hard of hearing and the hearing loss of the other is equal to or lower than 40 Db, this person shall not be classified as hearing disability.

III

Intellectual Disability

Intellectual disability means that a person’s intellectual performance is apparently lower than that of a normal person, and demonstrates adaptive-behavior impairment. Intellectual disability includes: intellectual deficiency or intellectual retardation due to various causes, during the period of intellectual development (before 18 years old); intellectual loss or apparent intellectual deterioration at old age due to various harmful causes, after intelligence maturation. In order to facilitate the comparison with the international sources, this classification of intellectual disability is conducted based on the intelligence quotient(IQ) and social adaptive behavior, in reference of classification standards for intellectual disability from the World Health Organization (WHO)and American Association on Intellectual Retardation (AAMR)

 

Class 1 Intellectual Disability
(Profound)

IQ score is 20 or below 25; adaptive behavior minimal ; facial appearance apparently dull; the person needs care of other person for life; capacity of sensori-motor functioning is so minimal that only lower limbs, hands and jaw could act through training

 

Class 2 Intellectual Disability
(Severe)

IQ score is 20-35 or 25-40; adaptive behavior poor; even training could hardly make the person self-caring, so care of other person still needs; both mobility and speaking development is poor; communicating ability poor.

 

Class 3 Intellectual Disability
(Moderate)

IQ score is 35-50 or 25-40; both adaptive behavior and application skill are not complete, for example, the person is partially self-caring; able to do simple housework and possess elementary knowledge of hygiene and safety; but has limited reading and calculating skill, as well as the cognitive skill toward the surroundings; and is only able to communicate in simple ways.

 

Class 4 Intellectual Disability
(Mild)

IQ score is 35-50 or 25-40; adaptive behavior below average; application skill quite normal, for example, the person is self-caring; able to do general housework or work, but short of skill and creativity; generally able to adapt to the society under guidance; able to read and calculate through special education; able to cognize the surroundings in a quite normal manner; able to communicate in a quite proper manner.

Note:

Intelligence Quotient(IQ)refers to the proportion of the intellectual age and chronological age measured with a intelligence scale, namely, IQ= intellectual Age / chronological Age X 100. Although Different methods for intelligence assessment have different IQ scores, their main diagnostic evidence is the same: social adaptive behavior.

IV

Physical Disability

Physical disability refers to the functional loss or impairment of the movement system due to lesion and mutilation of limbs, or paralysis and deformity of limbs and trunk of a person. Physical disability includes:

  1. Amputation or congenital mutilation of upper limbs or lower limbs due to injury or lesion, or congenital defect.
  2. Deformity or functional impairment of upper limbs or lower limbs due to injury, lesion or development abnormity.
  3. Deformity or functional impairment of spine due to injury, lesion or develop intellectual abnormity.
  4. Functional impairment of truck or limbs due to injury, lesion and development abnormity of the central and peripheral nerve system. The degree of the physical disability is classified mainly based on the functional impairment, with complex consideration of how many parts of movement system are disabled, where the disabled parts are and how serious the functional impairments are.

 

Class 1

  1. Paralysis of four limbs, paraplegia of lower limbs, inability to spontaneously move both articulatio coaxes; hemiparalysis; total functional loss of unilateral limbs.
  2. Amputation of different parts of four limbs or ectromelia, amputation or lipomeria of one whole arm (or whole leg) and both lower legs (or forearms); amputation or lipomeria of both upper arms and one upper leg (or one lower leg), amputation or lipomeria of both whole arms( or both whole legs).
  3. Profound functional impairment of both upper limbs; severer functional impairment of three limbs.

 

Class 2

  1. Paralysis or paraplegia of both lower limbs; stumps with few functions.
  2. Amputation or lipomeria of one whole leg (or whole arm) and one upper arm (or upper leg); amputation or lipomeria of three limps at different parts.
  3. Severer functional impairment of both upper limbs; moderate functional impairment of three limbs.

 

Class 3

  1. Amputation or lipomeria of both lower legs; amputation or lipomeria of one limp at upper arm, one upper leg or upper part.
  2. Severer functional impairment of one limb; moderate functional impairment of two limbs.
  3. Defect of both thumbs and forefinger (or middle finger)

 

Class 4

  1. Amputation or lipomeria of one lower leg.
  2. Severer functional impairment of one limb; mild functional impairment of two limbs.
  3. Spinal rigidity(including cervical vertebra); Humpback>70 degree; scoliosis>45 degree.
  4. leg-length discrepancy>5 cm.
  5. Defect of one thumb and forefinger (or middle finger); amputation or defect of four fingers except thumb.

Physical disability does not include the followings:

    1. Keeping thumb and forefinger (or middle finger) with loss of three other fingers.
    2. Keeping heel with loss of the front half of foot.
    3. leg-length discrepancy < 5 cm。
    4. Humpback<70 degree; scoliosis< 45 degree。

V

Psychic disability

Psychic disability, in relation to a person, refers to the psychosis lasting more than one year, which limits the social ability and causes different degrees of disorder and impairment on the person’s function for family and society.

Psychological disability includes:

  1. Psychic impairment due to brain and body diseases;
  2. Psychic impairment due to poisoning, including drug and alcohol dependence;
  3. Schizophrenia;
  4. Disability due to affective, paranoid, reactive, chizoaffective psychosis。

Psychological disability can be classified according to the scores of 10 questions listed in the Social Disability Screening Schedule provided by the World Health Organization (WHO).

 

Class 1
(profound)

Among the 10 questions of the Social Disability Screening Schedule, three or more are
scored “2 points”.

 

Class 2
(severe)

Among the 10 questions of Social Disability Screening Schedule, two or more are
scored “2 points”.

 

Class 3
(moderate)

Among the 10 questions of Social Disability Screening Schedule, only one is
scored“2 points”.

 

Class 4
(mild)

Among the 10 questions of Social Disability Screening Schedule, two or more are
scored “1 points”.

Psychic disability does not include the followings:

    1. The patient consecutively suffers the psychosis less than 1 year.
    2. Among the 10 questions of the Social Disability Screening Schedule, only one is scored “1 point” or every one scored “0”

Note: Since the Social Disability Screening Schedule shall be applied only by professional psychopathists, it is not published here to avoid mistakes or misunderstandings. Please understand!

Comparison between China Hearing Disability Standard and the International One 


Disability Standard Of China

Average Hearing Threshold Of The Better Ear(Db)

International Standard

Type

Class

(0.5,1,2kHz)

Degree of Hearing Difficulty

Class

Degree of Deafness

 

 

0-25

No Significance

A

Normal

 

 

26-40

Minimal Difficulty

B

Mild Deafness

Hard of Hearing

Class 2 Hard of Hearing

41-55

Mild difficulty

C

Moderate Deafness

 

Class 1 Hard of Hearing

55-70

Apparent Difficulty

D

Heavy Deafness

Deafness

Class 2 deafness

71-90

Severe Difficulty

E

Severe Deafness

 

Class 1 Deafness

>90

Profound Difficulty

F

Profound Deafness

Note: (1)Both deafness and hard of hearing represent two ears of a person; if the hearing loss of two ears are different, that of the better ear prevails.

(2) If just one ear of a person is of deafness or hard of hearing and the hearing loss of the other is equal to or lower than 40 dB, this person shall not be classified as hearing disability.

 


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