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Table 3 Results of semi-automated quantification of thigh muscles in patients with polymyositis or dermatomyositis and control persons

From: Quantitative 3D scintigraphy shows increased muscular uptake of pyrophosphate in idiopathic inflammatory myopathy

  All patients (N = 83) Controls (N = 46) p value
Estimate 95% CI Min–max Estimate 95% CI Min–max
SUVmean 0.34 [0.32;0.36] 0.15–0.73 0.21 [0.20;0.22] 0.14–0.29 < 0.0001
Slope of activity per length unit of muscle (SUVmean mm−1) − 0.00024 [− 0.00030;− 0.00018] − 0.00097 to 0.00047 − 0.00010 [− 0.00013;− 0.00007] − 0.00028 to 0.00014 < 0.0001