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Table 4 Inter- and intra-observer variability

From: High-risk coronary artery plaque in asymptomatic patients with type 2 diabetes: clinical risk factors and coronary artery calcium score

Variable Intra-observer variability Inter-observer variability
Mean diff. [95% LOA] r Mean diff. [95% LOA] r
Total plaque volume 5.0 [− 89.7; 99.7] 0.98 8.5 [− 176.1; 193.1] 0.91
Dense plaque 1.6 [− 22.9; 26.1] 0.99 0.5 [− 28.9; 29.9] 0.99
Fibrous plaque 5.9 [− 11.5; 23.2] 0.95 5.7 [− 13.5; 24.9] 0.95
Fibrous-fatty plaque 1.1 [ − 28.7; 30.9] 0.96 5.3 [− 44.9; 55.4] 0.87
Necrotic core plaque − 3.9 [− 45.7; 37.9] 0.91 − 3.1 [− 55.7; 49.4] 0.86
  1. Mean diff Mean difference between paired observations, LOA Limits of agreement calculated as the mean difference ± 1.96 standard deviation; r: Pearson’s coefficient of correlation between paired observations