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performance status

For certain medical purposes, such as enrolling individuals in medical trials and evaluating them for placement in housing, a concise means of communicating their ability to carry on typical life activities is needed. Several scales have been developed for this purpose.

World Health Organization performance status

Rating	Description
0	No symptoms. Fully active, able to carry on all pre-disease activities without restriction.
1	Symptomatic. Restricted in physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature, e.g., light housework, office work.
2	Symptomatic. Ambulatory and capable of all selfcare but unable to carry out any work activities. Less than 50% of waking hours in bed.
3	Capable of only limited selfcare. Confined to bed or chair more than 50% of waking hours.
4	Completely disabled. Cannot carry on any selfcare. Totally confined to bed or chair.
5	Dead.

Karnofsky performance status

Rating	Description
100%	normal, no complaints, no sign of disease
90%	capable of normal activity, few symptoms or signs of disease
80%	normal activity with some difficulty, some symptoms or signs
70%	caring for self, not capable of normal activity or work
60%	requiring some help, can take care of most personal requirements
50%	requires help often, requires frequent medical care
40%	disabled, requires special care and help
30%	severely disabled, hospital admission indicated but no risk of death
20%	very ill, urgently requiring admission, requires supportive measures or treatment
10%	moribund, rapidly progressive fatal disease processes
0%	death