Interobserver agreement for HRCT parenchymal patterns expressed as the single determination SD for continuous variables and the weighted κ coefficient for categorical variables* (n=168)
| Pattern | Interobserver variation |
|---|---|
| Total disease extent | 1.0% |
| Ground-glass opacification | 6.2% |
| Fine reticulation | 0.1% |
| Coarse reticulation | 8.8% |
| Honeycombing | 1.2% |
| Consolidation | 3.5% |
| Emphysema | 1.3% |
| Traction bronchiectasis* | 0.61 |
| Traction bronchiectasis absent/present* | 0.69 |
| Honeycombing absent/present* | 0.50 |
| Radiological diagnosis* (UIP/Fibrotic NSIP/Indeterminate) | 0.74 |
*denotes the categorical variables.
NSIP, non-specific interstitial pneumonia; UIP, usual interstitial pneumonia.