Figure 2From: Test-retest reliability and sensitivity of the 20-meter walk test among patients with knee osteoarthritis Distribution of 20 meter walk times (seconds) by trial (whiskers = interquartile range ± 1.5 times the interquartile range, boxes = interquartile ranges, diamond = mean values, horizontal line in each box = median values). Lines under each set of trials indicate trials performed during the same session.Back to article page