What are the cutoff scores for a problematic knee on the Pain subscale for KOOS?

What are the cutoff scores for a problematic knee on the Pain subscale for KOOS?

• A. Pain <85.0
• B. Pain <86.1
• C. Pain <87.0
• D. Pain <80.0

Answer: (B)

KOOS Pain subscale scores range from 0 to 100, with higher scores meaning less pain. To identify a knee as having clinically meaningful pain problems, a threshold around the mid-80s is used, and the validated cutoff is 86.1. This specific value comes from studies that analyzed how well the Pain score distinguishes between knees with problem-level symptoms and those without, using methods like ROC analysis to optimize sensitivity and specificity. Therefore, when the Pain subscale score falls below 86.1, the knee is considered to have a problematic pain level. The other numbers are not the validated threshold.

KOOS Pain subscale scores range from 0 to 100, with higher scores meaning less pain. To identify a knee as having clinically meaningful pain problems, a threshold around the mid-80s is used, and the validated cutoff is 86.1. This specific value comes from studies that analyzed how well the Pain score distinguishes between knees with problem-level symptoms and those without, using methods like ROC analysis to optimize sensitivity and specificity. Therefore, when the Pain subscale score falls below 86.1, the knee is considered to have a problematic pain level. The other numbers are not the validated threshold.