Figure 2From: Measurement of global functional performance in patients with rheumatoid arthritis using rheumatology function testsFrequency distributions of the functional performance scales for 779 patients with rheumatoid arthritis. Values (range, mean ± SD) were grip strength, 0–62 kg, 14 ± 10 kg; walking velocity, 0–429 feet/min, 194 ± 82 feet/min; shirt button speed, 0–23 buttons/min, 7.1 ± 3.8 feet/min; and global functional performance, 0–100, 42 ± 19.Back to article page