What is the MDC value for the Tegner Activity Scale?

What is the MDC value for the Tegner Activity Scale?

• A. 5
• B. 1
• C. 10
• D. 2

Answer: (B)

The smallest change that can be trusted as a real shift in the Tegner Activity Scale is about one level. The Tegner scale ranges from 0 to 10, with each point representing a distinct activity level from sedentary to competitive sport. Because the scale has some measurement error when you reassess, a change of one point is typically the threshold that exceeds this error at a common confidence level (often 95%), indicating a true change in activity level. Therefore, the MDC value is 1. Changes of 5 or 10 are far larger than what’s needed to confirm real difference, and 2 is simply not the standard MDC value reported for this scale.

The smallest change that can be trusted as a real shift in the Tegner Activity Scale is about one level. The Tegner scale ranges from 0 to 10, with each point representing a distinct activity level from sedentary to competitive sport. Because the scale has some measurement error when you reassess, a change of one point is typically the threshold that exceeds this error at a common confidence level (often 95%), indicating a true change in activity level. Therefore, the MDC value is 1. Changes of 5 or 10 are far larger than what’s needed to confirm real difference, and 2 is simply not the standard MDC value reported for this scale.