Menzies et al used the Premorbid Lifestyle Score (PLS) to describe a patient's performance status prior to acute illness. It shares a number of features with the ECOG, WHO and Zubrod scores for patients with cancer.
Performance Level
Score
fully employed without restriction
0
independent, fully ambulatory, employed with restrictions
1
independent, fully ambulatory, unemployed
1
restricted activities, lives alone but able to get out of the house to for necessary activities
2
restricted activities with severely limited exercise capacity
2
house-bound and cannot get out of the house without assistance
3
house-bound and unable to do heavy chores
3
not chair or bed bound but needs assistance with some activities of daily living
3
chair or bed bound
4
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