Utility of a simplified ultrasound assessment to assess interstitial pulmonary fibrosis in connective tissue disorders - preliminary results

Table 2 Inter-and intra-observer agreement data for simplified US B-lines assessment

	Inter-observer	Intra-observer
Anatomical lines	weighted kappa values for the semiquantitative system	weighted kappa values for the semiquantitative system
2 ^nd para-sternal LIS	0.885	0.864
4 ^th mid-clavear LIS	0.836	0.881
4 ^th anterior axillary LIS	0.863	0.868
4 ^th mid-axillary LIS	0.812	0.845
8 ^th paravertebral LIS	0.769	0.894
8 ^th sub-scapular LIS	0.828	0.883
8 ^th posterior axilary LIS	0.864	0.862

Agreement between both sonographers on both the comprehensive simplified US assessment.