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Fig. 1 | Diagnostic Pathology

Fig. 1

From: Grading variation in 2,934 patients with ductal carcinoma in situ of the breast: the effect of laboratory- and pathologist-specific feedback reports

Fig. 1

Inter-laboratory (n = 31) variation in histologic grading of ductal carcinoma in situ (DCIS) of the breast before (a-c) (n = 1493) and after feedback reports (d-f) (n = 1461). Percentages per laboratory show the absolute deviation from the national proportion per histologic grade for grade I (A + D), grade II (B + E) and grade III (C + F). Laboratory numbers for all sub-figures (a-f) correspond. All laboratories are ranged from lower (negative values) to higher proportions (positive values). A decrease in absolute range was observed for grades II and III; grade II (−22.0%), grade III (−6.2%). An increase was observed for grade I (+ 6.5%). Striped bars indicate laboratories who received feedback on pathologist’ level (n = 10)

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