Annals of the rheumatic diseases
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Multicenter Study
Evaluation of clinically relevant states in patient reported outcomes in knee and hip osteoarthritis: the patient acceptable symptom state.
The patient acceptable symptom state (PASS) is the value beyond which patients can consider themselves well. This concept can help in interpreting results of clinical trials. ⋯ The use of PASS in clinical trials would provide more meaningful results expressed as a proportion of patients in an acceptable symptom state.