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Volpara density grade (VDG) from images with tube current–exposure time product (mAs) varied by +10% vs VDG from the original images
| VDG from images with mAs + 10% | VDG from original images |
||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | ||
| 1 | 102 | 1 | 0 | 0 | 103 (11.3%) |
| 2 | 1 | 248 | 1 | 0 | 250 (27.3%) |
| 3 | 0 | 1 | 390 | 0 | 391 (42.7%) |
| 4 | 0 | 0 | 0 | 171 | 171 (18.7%) |
| 103 (11.3%) | 250 (27.3%) | 391 (42.7%) | 171 (18.7%) | 915 | |
Weighted kappa = 1.00, 95% confidence interval: 0.99–1.00.
