Table 1.

HUI3: health-status classification system

Attribute	Level	Description
Vision	1	Able to see well enough to read ordinary newsprint and recognize a friend on the other side of the street, without glasses or contact lenses.
	2	Able to see well enough to read ordinary newsprint and recognize a friend on the other side of the street but with glasses.
	3	Able to read ordinary newsprint with or without glasses but unable to recognize a friend on the other side of the street, even with glasses.
	4	Able to recognize a friend on the other side of the street with or without glasses but unable to read ordinary newsprint, even with glasses.
	5	Unable to read ordinary newsprint and unable to recognize a friend on the other side of the street, even with glasses.
	6	Unable to see at all.
Hearing	1	Able to hear what is said in a group conversation with at least three other people, without a hearing aid.
	2	Able to hear what is said in a conversation with one other person in a quiet room without a hearing aid but requires a hearing aid to hear what is said in a group conversation with at least three other people.
	3	Able to hear what is said in a conversation with one other person in a quiet room with a hearing aid and able to hear what is said in a group conversation with at least three other people, with a hearing aid.
	4	Able to hear what is said in a conversation with one other person in a quiet room, without a hearing aid but unable to hear what is said in a group conversation with at least three other people even with a hearing aid.
	5	Able to hear what is said in a conversation with one other person in a quiet room with a hearing aid but unable to hear what is said in a group conversation with at least three other people even with a hearing aid.
	6	Unable to hear at all.
Speech	1	Able to be understood completely when speaking with strangers or friends.
	2	Able to be understood partially when speaking with strangers but able to be understood completely when speaking with people who know me well.
	3	Able to be understood partially when speaking with strangers or people who know me well.
	4	Unable to be understood when speaking with strangers but able to be understood partially by people who know me well.
	5	Unable to be understood when speaking to other people (or unable to speak at all).
Ambulation	1	Able to walk around the neighborhood without difficulty and without walking equipment.
	2	Able to walk around the neighborhood with difficulty but does not require walking equipment or the help of another person.
	3	Able to walk around the neighborhood with walking equipment but without the help of another person.
	4	Able to walk only short distances with walking equipment and requires a wheelchair to get around the neighborhood.
	5	Unable to walk alone, even with walking equipment. Able to walk short distances with the help of another person and requires a wheelchair to get around the neighborhood.
	6	Cannot walk at all.
Dexterity	1	Full use of 2 hands and 10 fingers.
	2	Limitations in the use of hands or fingers but does not require special tools or help of another person.
	3	Limitations in the use of hands or fingers and is independent with use of special tools (does not require the help of another person).
	4	Limitations in the use of hands or fingers and requires the help of another person for some tasks (not independent even with use of special tools).
	5	Limitations in use of hands or fingers and requires the help of another person for most tasks (not independent even with use of special tools).
	6	Limitations in use of hands or fingers and requires the help of another person for all tasks (not independent even with use of special tools).
Emotion	1	Happy and interested in life.
	2	Somewhat happy.
	3	Somewhat unhappy.
	4	Very unhappy.
	5	So unhappy that life is not worthwhile.
Cognition	1	Able to remember most things, think clearly, and solve day-to-day problems.
	2	Able to remember most things but have a little difficulty when trying to think and solve day-to-day problems.
	3	Somewhat forgetful but able to think clearly and solve day-to-day problems.
	4	Somewhat forgetful and have a little difficulty when trying to think or solve day-to-day problems.
	5	Very forgetful and have great difficulty when trying to think or solve day-to-day problems.
	6	Unable to remember anything at all and unable to think or solve day-to-day problems.
Pain	1	Free of pain and discomfort.
	2	Mild-to-moderate pain that prevents no activities.
	3	Moderate pain that prevents a few activities.
	4	Moderate-to-severe pain that prevents some activities.
	5	Severe pain that prevents most activities.

Abbreviation: HUI3, Health Utilities Index Mark 3.

Source ref. [14], p. 124.