Table 1

 Summary of the reproducibility of automated and non-automated methods for quantifying bronchial measurements

Inter-observer agreement/varianceIntra-observer agreement/varianceStatistical test
Interpretation of the different tests is as follows. Weighted kappa coefficient:23 0–0.20 poor; 0.21–0.40 fair; 0.41–0.60 moderate; 0.61–0.80 good; 0.81–1.00 excellent. Intraclass correlation coefficient:24 <0.40 poor; 0.40–0.59 fair; 0.60–0.74 good; >0.74 excellent.
Non-automated methods (visual estimation)
    Bronchial dilatation0.51–0.8717,18Weighted kappa coefficient
0.88–>0.9719,20Intraclass correlation coefficient
    Bronchial wall thickness0.55–0.6117,18Weighted kappa coefficient
0.67–>0.9719,20Intraclass correlation coefficient
Non-automated methods (manual measurement using electronic callipers)
    Bronchial dilatation0.87220.9522Intraclass correlation coefficient
    Bronchial wall thickness0.33220.3322Intraclass correlation coefficient
Automated methods
    Bronchial dilatation0.96–>0.9712,210.9921Intraclass correlation coefficient
    Bronchial wall thickness0.78–>0.9712,210.8921Intraclass correlation coefficient