Table 2.

Interreader ICCs for structural lesions

Category	Time point	ICC	95% CI
Erosion	Baseline	0.687	0.531, 0.790
	Week 12	0.710	0.569, 0.806
	Change from baseline to week 12	0.764	0.661, 0.838
Backfill	Baseline	0.703	0.593, 0.787
	Week 12	0.797	0.708, 0.861
	Change from baseline to week 12	0.733	0.620, 0.817
Fat metaplasia	Baseline	0.788	0.665, 0.863
	Week 12	0.799	0.694, 0.868
	Change from baseline to week 12	0.616	0.467, 0.731
Ankylosis	Baseline	0.972	0.959, 0.981
	Week 12	0.954	0.931, 0.969
	Change from baseline to week 12	0.002a	−0.201, 0.207

^aAlmost no change in ankylosis recorded by either reader. ICC here is not valid.