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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